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1401213 = 31142461
BaseRepresentation
bin101010110000101111101
32122012002210
411112011331
5324314323
650011033
714624112
oct5260575
92565083
101401213
11877830
12576a79
133a0a28
14286909
151ca293
hex15617d

1401213 has 8 divisors (see below), whose sum is σ = 2038176. Its totient is φ = 849200.

The previous prime is 1401203. The next prime is 1401217. The reversal of 1401213 is 3121041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1401213 - 29 = 1400701 is a prime.

It is an Ulam number.

1401213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21198 + ... + 21263.

It is an arithmetic number, because the mean of its divisors is an integer number (254772).

21401213 is an apocalyptic number.

It is an amenable number.

1401213 is a deficient number, since it is larger than the sum of its proper divisors (636963).

1401213 is a wasteful number, since it uses less digits than its factorization.

1401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42475.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1401213 is about 1183.7284316937. The cubic root of 1401213 is about 111.9011936836.

Adding to 1401213 its reverse (3121041), we get a palindrome (4522254).

The spelling of 1401213 in words is "one million, four hundred one thousand, two hundred thirteen".

Divisors: 1 3 11 33 42461 127383 467071 1401213