1047556542 has 16 divisors (see below), whose sum is σ = 2110187520. Its totient is φ = 346673112.

The previous prime is 1047556537. The next prime is 1047556571. The reversal of 1047556542 is 2456557401.

It is a self number, because there is not a number n which added to its sum of digits gives 1047556542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627198 + ... + 628865.

It is an arithmetic number, because the mean of its divisors is an integer number (131886720).

Almost surely, 2^1047556542 is an apocalyptic number.

1047556542 is an abundant number, since it is smaller than the sum of its proper divisors (1062630978).

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

1047556542 is a wasteful number, since it uses less digits than its factorization.

1047556542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256207.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 1047556542 is about 32365.9781560824. The cubic root of 1047556542 is about 1015.6073248231.

The spelling of 1047556542 in words is "one billion, forty-seven million, five hundred fifty-six thousand, five hundred forty-two".