1011252540042 has 12 divisors (see below), whose sum is σ = 2191047170130. Its totient is φ = 337084180008.

The previous prime is 1011252540029. The next prime is 1011252540091. The reversal of 1011252540042 is 2400452521101.

It is a happy number.

1011252540042 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 252 + 5 + 400 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 944801496081 + 66451043961 = 972009^2 + 257781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011252539988 and 1011252540015.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28090348317 + ... + 28090348352.

Almost surely, 2^{1011252540042} is an apocalyptic number.

1011252540042 is an abundant number, since it is smaller than the sum of its proper divisors (1179794630088).

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

1011252540042 is a wasteful number, since it uses less digits than its factorization.

1011252540042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56180696677 (or 56180696674 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 1011252540042 in words is "one trillion, eleven billion, two hundred fifty-two million, five hundred forty thousand, forty-two".