247551042 has 48 divisors (see below), whose sum is σ = 528727680. Its totient is φ = 77252352.

The previous prime is 247551041. The next prime is 247551091. The reversal of 247551042 is 240155742.

It is a super-2 number, since 2×247551042² = 122563036790571528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247551041) 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 23 ways as a sum of consecutive naturals, for example, 636184 + ... + 636572.

It is an arithmetic number, because the mean of its divisors is an integer number (11015160).

Almost surely, 2^247551042 is an apocalyptic number.

247551042 is an abundant number, since it is smaller than the sum of its proper divisors (281176638).

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

247551042 is a wasteful number, since it uses less digits than its factorization.

247551042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 247551042 is about 15733.7548601724. The cubic root of 247551042 is about 627.8967756692.

The spelling of 247551042 in words is "two hundred forty-seven million, five hundred fifty-one thousand, forty-two".