491029542 has 24 divisors (see below), whose sum is σ = 1064401416. Its totient is φ = 163598976.

The previous prime is 491029541. The next prime is 491029573. The reversal of 491029542 is 245920194.

491029542 is a `hidden beast` number, since 4 + 9 + 102 + 9 + 542 = 666.

It is a super-2 number, since 2×491029542² = 482220022233459528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491029497 and 491029506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491029541) 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, 42693 + ... + 52959.

It is an arithmetic number, because the mean of its divisors is an integer number (44350059).

Almost surely, 2^491029542 is an apocalyptic number.

491029542 is an abundant number, since it is smaller than the sum of its proper divisors (573371874).

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

491029542 is a wasteful number, since it uses less digits than its factorization.

491029542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932 (or 12929 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 491029542 is about 22159.1864020320. The cubic root of 491029542 is about 788.9252821918.

The spelling of 491029542 in words is "four hundred ninety-one million, twenty-nine thousand, five hundred forty-two".