1240432402 has 16 divisors (see below), whose sum is σ = 2064204000. Its totient is φ = 554275840.

The previous prime is 1240432397. The next prime is 1240432429. The reversal of 1240432402 is 2042340421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476527 + ... + 479122.

It is an arithmetic number, because the mean of its divisors is an integer number (129012750).

Almost surely, 2^1240432402 is an apocalyptic number.

1240432402 is a deficient number, since it is larger than the sum of its proper divisors (823771598).

1240432402 is a wasteful number, since it uses less digits than its factorization.

1240432402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955721.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1240432402 is about 35219.7728839923. The cubic root of 1240432402 is about 1074.4619342984.

Adding to 1240432402 its reverse (2042340421), we get a palindrome (3282772823).

The spelling of 1240432402 in words is "one billion, two hundred forty million, four hundred thirty-two thousand, four hundred two".