10491642 has 24 divisors (see below), whose sum is σ = 25979616. Its totient is φ = 2997576.

The previous prime is 10491623. The next prime is 10491643. The reversal of 10491642 is 24619401.

10491642 is a `hidden beast` number, since 10 + 4 + 9 + 1 + 642 = 666.

It is a super-2 number, since 2×10491642² = 220149103712328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10491643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41508 + ... + 41759.

It is an arithmetic number, because the mean of its divisors is an integer number (1082484).

Almost surely, 2^10491642 is an apocalyptic number.

10491642 is an abundant number, since it is smaller than the sum of its proper divisors (15487974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10491642 is a wasteful number, since it uses less digits than its factorization.

10491642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83282 (or 83279 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 10491642 is about 3239.0804250589. The cubic root of 10491642 is about 218.9178399507.

The spelling of 10491642 in words is "ten million, four hundred ninety-one thousand, six hundred forty-two".