1240400488 has 32 divisors (see below), whose sum is σ = 2457619200. Its totient is φ = 585718848.

The previous prime is 1240400407. The next prime is 1240400507. The reversal of 1240400488 is 8840040421.

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, 28131 + ... + 57202.

It is an arithmetic number, because the mean of its divisors is an integer number (76800600).

Almost surely, 2^1240400488 is an apocalyptic number.

It is an amenable number.

1240400488 is a deficient number, since it is larger than the sum of its proper divisors (1217218712).

1240400488 is a wasteful number, since it uses less digits than its factorization.

1240400488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85441 (or 85437 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 1240400488 is about 35219.3198117170. The cubic root of 1240400488 is about 1074.4527195891.

The spelling of 1240400488 in words is "one billion, two hundred forty million, four hundred thousand, four hundred eighty-eight".