1240400492 has 6 divisors (see below), whose sum is σ = 2170700868. Its totient is φ = 620200244.

The previous prime is 1240400407. The next prime is 1240400507. The reversal of 1240400492 is 2940040421.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155050058 + ... + 155050065.

It is an arithmetic number, because the mean of its divisors is an integer number (361783478).

Almost surely, 2^1240400492 is an apocalyptic number.

It is an amenable number.

1240400492 is a deficient number, since it is larger than the sum of its proper divisors (930300376).

1240400492 is a wasteful number, since it uses less digits than its factorization.

1240400492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310100127 (or 310100125 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1240400492 is about 35219.3198685040. The cubic root of 1240400492 is about 1074.4527207440.

The spelling of 1240400492 in words is "one billion, two hundred forty million, four hundred thousand, four hundred ninety-two".