1244145402 has 48 divisors (see below), whose sum is σ = 2783832480. Its totient is φ = 401327136.

The previous prime is 1244145347. The next prime is 1244145457. The reversal of 1244145402 is 2045414421.

1244145402 is a `hidden beast` number, since 1 + 244 + 14 + 5 + 402 = 666.

It is an interprime number because it is at equal distance from previous prime (1244145347) and next prime (1244145457).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76993 + ... + 91739.

It is an arithmetic number, because the mean of its divisors is an integer number (57996510).

Almost surely, 2^1244145402 is an apocalyptic number.

1244145402 is an abundant number, since it is smaller than the sum of its proper divisors (1539687078).

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

1244145402 is a wasteful number, since it uses less digits than its factorization.

1244145402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14907 (or 14904 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 1244145402 is about 35272.4453646185. The cubic root of 1244145402 is about 1075.5329326535.

Adding to 1244145402 its reverse (2045414421), we get a palindrome (3289559823).

The spelling of 1244145402 in words is "one billion, two hundred forty-four million, one hundred forty-five thousand, four hundred two".