1240012897 has 8 divisors (see below), whose sum is σ = 1271827872. Its totient is φ = 1208272800.

The previous prime is 1240012889. The next prime is 1240012913. The reversal of 1240012897 is 7982100421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240012897 - 2³ = 1240012889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240012867) 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, 15622 + ... + 52192.

It is an arithmetic number, because the mean of its divisors is an integer number (158978484).

Almost surely, 2^1240012897 is an apocalyptic number.

It is an amenable number.

1240012897 is a deficient number, since it is larger than the sum of its proper divisors (31814975).

1240012897 is an equidigital number, since it uses as much as digits as its factorization.

1240012897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37439.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1240012897 is about 35213.8168479363. The cubic root of 1240012897 is about 1074.3407956334.

The spelling of 1240012897 in words is "one billion, two hundred forty million, twelve thousand, eight hundred ninety-seven".