1012555445442 has 32 divisors (see below), whose sum is σ = 2174435570304. Its totient is φ = 313190304000.

The previous prime is 1012555445441. The next prime is 1012555445443. The reversal of 1012555445442 is 2445445552101.

It is an interprime number because it is at equal distance from previous prime (1012555445441) and next prime (1012555445443).

It is a junction number, because it is equal to n+sod(n) for n = 1012555445394 and 1012555445403.

It is not an unprimeable number, because it can be changed into a prime (1012555445441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69901309 + ... + 69915792.

It is an arithmetic number, because the mean of its divisors is an integer number (67951111572).

Almost surely, 2^{1012555445442} is an apocalyptic number.

1012555445442 is an abundant number, since it is smaller than the sum of its proper divisors (1161880124862).

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

1012555445442 is a wasteful number, since it uses less digits than its factorization.

1012555445442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139817194.

The product of its (nonzero) digits is 640000, while the sum is 42.

The spelling of 1012555445442 in words is "one trillion, twelve billion, five hundred fifty-five million, four hundred forty-five thousand, four hundred forty-two".