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2002443421 = 111959162391
BaseRepresentation
bin111011101011010…
…1101110010011101
312011112221122222011
41313112231302131
513100111142141
6530411151221
7100423326316
oct16726556235
95145848864
102002443421
11938366420
1247a745511
1325bb21584
1414dd3360d
15babe6881
hex775adc9d

2002443421 has 16 divisors (see below), whose sum is σ = 2338444800. Its totient is φ = 1695351600.

The previous prime is 2002443349. The next prime is 2002443433. The reversal of 2002443421 is 1243442002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2002443421 - 217 = 2002312349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002443392 and 2002443401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002443451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68865 + ... + 93526.

It is an arithmetic number, because the mean of its divisors is an integer number (146152800).

Almost surely, 22002443421 is an apocalyptic number.

It is an amenable number.

2002443421 is a deficient number, since it is larger than the sum of its proper divisors (336001379).

2002443421 is a wasteful number, since it uses less digits than its factorization.

2002443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162480.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2002443421 is about 44748.6694886004. The cubic root of 2002443421 is about 1260.4339273476.

Adding to 2002443421 its reverse (1243442002), we get a palindrome (3245885423).

The spelling of 2002443421 in words is "two billion, two million, four hundred forty-three thousand, four hundred twenty-one".

Divisors: 1 11 19 59 209 649 1121 12331 162391 1786301 3085429 9581069 33939719 105391759 182040311 2002443421