1402400123 has 8 divisors (see below), whose sum is σ = 1407384720. Its totient is φ = 1397424160.

The previous prime is 1402400117. The next prime is 1402400143. The reversal of 1402400123 is 3210042041.

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 1402400123 - 2¹⁴ = 1402383739 is a prime.

It is a super-2 number, since 2×1402400123² = 3933452209980830258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402400143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533753 + ... + 536373.

It is an arithmetic number, because the mean of its divisors is an integer number (175923090).

Almost surely, 2^1402400123 is an apocalyptic number.

1402400123 is a deficient number, since it is larger than the sum of its proper divisors (4984597).

1402400123 is a wasteful number, since it uses less digits than its factorization.

1402400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1402400123 is about 37448.6331259233. The cubic root of 1402400123 is about 1119.3278606910.

Adding to 1402400123 its reverse (3210042041), we get a palindrome (4612442164).

The spelling of 1402400123 in words is "one billion, four hundred two million, four hundred thousand, one hundred twenty-three".