1240400496 has 40 divisors (see below), whose sum is σ = 3234328704. Its totient is φ = 409600960.

The previous prime is 1240400407. The next prime is 1240400507. The reversal of 1240400496 is 6940040421.

It is a congruent number.

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, 115620 + ... + 125891.

Almost surely, 2^1240400496 is an apocalyptic number.

1240400496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1240400496 is an abundant number, since it is smaller than the sum of its proper divisors (1993928208).

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

1240400496 is a wasteful number, since it uses less digits than its factorization.

1240400496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241629 (or 241623 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1240400496 is about 35219.3199252910. The cubic root of 1240400496 is about 1074.4527218990.

The spelling of 1240400496 in words is "one billion, two hundred forty million, four hundred thousand, four hundred ninety-six".