23142440402 has 16 divisors (see below), whose sum is σ = 34782993432. Its totient is φ = 11548131840.

The previous prime is 23142440393. The next prime is 23142440411. The reversal of 23142440402 is 20404424132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23142440393) and next prime (23142440411).

It can be written as a sum of positive squares in 4 ways, for example, as 21188004721 + 1954435681 = 145561^2 + 44209^2 .

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, 2619152 + ... + 2627972.

Almost surely, 2^23142440402 is an apocalyptic number.

23142440402 is a deficient number, since it is larger than the sum of its proper divisors (11640553030).

23142440402 is a wasteful number, since it uses less digits than its factorization.

23142440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11293.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 23142440402 its reverse (20404424132), we get a palindrome (43546864534).

The spelling of 23142440402 in words is "twenty-three billion, one hundred forty-two million, four hundred forty thousand, four hundred two".