400423112402 has 8 divisors (see below), whose sum is σ = 601415730300. Its totient is φ = 199951202304.

The previous prime is 400423112381. The next prime is 400423112423. The reversal of 400423112402 is 204211324004.

It is an interprime number because it is at equal distance from previous prime (400423112381) and next prime (400423112423).

It can be written as a sum of positive squares in 2 ways, for example, as 398982985801 + 1440126601 = 631651^2 + 37949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130175027 + ... + 130178102.

Almost surely, 2^400423112402 is an apocalyptic number.

400423112402 is a deficient number, since it is larger than the sum of its proper divisors (200992617898).

400423112402 is a wasteful number, since it uses less digits than its factorization.

400423112402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260353900.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 400423112402 its reverse (204211324004), we get a palindrome (604634436406).

The spelling of 400423112402 in words is "four hundred billion, four hundred twenty-three million, one hundred twelve thousand, four hundred two".