1137421840 has 40 divisors (see below), whose sum is σ = 2667929688. Its totient is φ = 450938880.

The previous prime is 1137421819. The next prime is 1137421841. The reversal of 1137421840 is 481247311.

It can be written as a sum of positive squares in 4 ways, for example, as 10342656 + 1127079184 = 3216^2 + 33572^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1137421841) 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, 53871 + ... + 71950.

Almost surely, 2^1137421840 is an apocalyptic number.

1137421840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1137421840 is an abundant number, since it is smaller than the sum of its proper divisors (1530507848).

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

1137421840 is a wasteful number, since it uses less digits than its factorization.

1137421840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125947 (or 125941 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1137421840 is about 33725.6851672431. The cubic root of 1137421840 is about 1043.8558297320.

The spelling of 1137421840 in words is "one billion, one hundred thirty-seven million, four hundred twenty-one thousand, eight hundred forty".