1240620402 has 32 divisors (see below), whose sum is σ = 2836944000. Its totient is φ = 354307968.

The previous prime is 1240620361. The next prime is 1240620419. The reversal of 1240620402 is 2040260421.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119724 + ... + 129672.

It is an arithmetic number, because the mean of its divisors is an integer number (88654500).

Almost surely, 2^1240620402 is an apocalyptic number.

1240620402 is an abundant number, since it is smaller than the sum of its proper divisors (1596323598).

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

1240620402 is a wasteful number, since it uses less digits than its factorization.

1240620402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1240620402 is about 35222.4417381873. The cubic root of 1240620402 is about 1074.5162133921.

Adding to 1240620402 its reverse (2040260421), we get a palindrome (3280880823).

The spelling of 1240620402 in words is "one billion, two hundred forty million, six hundred twenty thousand, four hundred two".