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90120542 = 2411099031
BaseRepresentation
bin1010101111100…
…10000101011110
320021120121010212
411113302011132
5141032324132
612535332422
72143004051
oct527620536
9207517125
1090120542
1146963996
1226221112
1315894a85
14bd7ca98
157da25b2
hex55f215e

90120542 has 8 divisors (see below), whose sum is σ = 138478032. Its totient is φ = 43961200.

The previous prime is 90120539. The next prime is 90120557. The reversal of 90120542 is 24502109.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549434 + ... + 549597.

It is an arithmetic number, because the mean of its divisors is an integer number (17309754).

Almost surely, 290120542 is an apocalyptic number.

90120542 is a deficient number, since it is larger than the sum of its proper divisors (48357490).

90120542 is a wasteful number, since it uses less digits than its factorization.

90120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099074.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 90120542 is about 9493.1839758850. The cubic root of 90120542 is about 448.3404585439.

The spelling of 90120542 in words is "ninety million, one hundred twenty thousand, five hundred forty-two".

Divisors: 1 2 41 82 1099031 2198062 45060271 90120542