1012756540 has 24 divisors (see below), whose sum is σ = 2138546592. Its totient is φ = 402863040.

The previous prime is 1012756529. The next prime is 1012756541. The reversal of 1012756540 is 456572101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012756541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136264 + ... + 143503.

It is an arithmetic number, because the mean of its divisors is an integer number (89106108).

Almost surely, 2^1012756540 is an apocalyptic number.

1012756540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012756540 is an abundant number, since it is smaller than the sum of its proper divisors (1125790052).

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

1012756540 is a wasteful number, since it uses less digits than its factorization.

1012756540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279957 (or 279955 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1012756540 is about 31823.8360352739. The cubic root of 1012756540 is about 1004.2342260253.

The spelling of 1012756540 in words is "one billion, twelve million, seven hundred fifty-six thousand, five hundred forty".