1240047738 has 32 divisors (see below), whose sum is σ = 2771611200. Its totient is φ = 410956848.

The previous prime is 1240047713. The next prime is 1240047793. The reversal of 1240047738 is 8377400421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57028 + ... + 75711.

It is an arithmetic number, because the mean of its divisors is an integer number (86612850).

Almost surely, 2^1240047738 is an apocalyptic number.

1240047738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1240047738 is an abundant number, since it is smaller than the sum of its proper divisors (1531563462).

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

1240047738 is a wasteful number, since it uses less digits than its factorization.

1240047738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132923 (or 132917 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 1240047738 is about 35214.3115508453. The cubic root of 1240047738 is about 1074.3508575602.

The spelling of 1240047738 in words is "one billion, two hundred forty million, forty-seven thousand, seven hundred thirty-eight".