1055278542 has 16 divisors (see below), whose sum is σ = 2142058752. Its totient is φ = 346509240.

The previous prime is 1055278537. The next prime is 1055278559. The reversal of 1055278542 is 2458725501.

It is a super-2 number, since 2×1055278542² = 2227225602411291528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055278542.

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, 1312134 + ... + 1312937.

It is an arithmetic number, because the mean of its divisors is an integer number (133878672).

Almost surely, 2^1055278542 is an apocalyptic number.

1055278542 is an abundant number, since it is smaller than the sum of its proper divisors (1086780210).

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

1055278542 is a wasteful number, since it uses less digits than its factorization.

1055278542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625143.

The product of its (nonzero) digits is 112000, while the sum is 39.

The square root of 1055278542 is about 32485.0510542926. The cubic root of 1055278542 is about 1018.0967141014.

The spelling of 1055278542 in words is "one billion, fifty-five million, two hundred seventy-eight thousand, five hundred forty-two".