1255136042 has 16 divisors (see below), whose sum is σ = 1914192000. Its totient is φ = 617136000.

The previous prime is 1255136033. The next prime is 1255136093. The reversal of 1255136042 is 2406315521.

It is a junction number, because it is equal to n+sod(n) for n = 1255135996 and 1255136014.

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, 23834 + ... + 55482.

It is an arithmetic number, because the mean of its divisors is an integer number (119637000).

Almost surely, 2^1255136042 is an apocalyptic number.

1255136042 is a deficient number, since it is larger than the sum of its proper divisors (659055958).

1255136042 is a wasteful number, since it uses less digits than its factorization.

1255136042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31981.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1255136042 is about 35427.8992038760. The cubic root of 1255136042 is about 1078.6906978747.

The spelling of 1255136042 in words is "one billion, two hundred fifty-five million, one hundred thirty-six thousand, forty-two".