1240891476 has 24 divisors (see below), whose sum is σ = 3158633184. Its totient is φ = 376027680.

The previous prime is 1240891471. The next prime is 1240891493. The reversal of 1240891476 is 6741980421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240891471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700215 + ... + 4700478.

It is an arithmetic number, because the mean of its divisors is an integer number (131609716).

Almost surely, 2^1240891476 is an apocalyptic number.

It is an amenable number.

1240891476 is an abundant number, since it is smaller than the sum of its proper divisors (1917741708).

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

1240891476 is a wasteful number, since it uses less digits than its factorization.

1240891476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400711 (or 9400709 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1240891476 is about 35226.2895576585. The cubic root of 1240891476 is about 1074.5944678406.

The spelling of 1240891476 in words is "one billion, two hundred forty million, eight hundred ninety-one thousand, four hundred seventy-six".