402140331121 has 4 divisors (see below), whose sum is σ = 402324886000. Its totient is φ = 401955776244.

The previous prime is 402140331113. The next prime is 402140331133. The reversal of 402140331121 is 121133041204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402140331121 - 2³ = 402140331113 is a prime.

It is a super-2 number, since 2×402140331121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402140331092 and 402140331101.

It is not an unprimeable number, because it can be changed into a prime (402140311121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92274171 + ... + 92278528.

It is an arithmetic number, because the mean of its divisors is an integer number (100581221500).

Almost surely, 2^402140331121 is an apocalyptic number.

It is an amenable number.

402140331121 is a deficient number, since it is larger than the sum of its proper divisors (184554879).

402140331121 is a wasteful number, since it uses less digits than its factorization.

402140331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184554878.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 402140331121 its reverse (121133041204), we get a palindrome (523273372325).

The spelling of 402140331121 in words is "four hundred two billion, one hundred forty million, three hundred thirty-one thousand, one hundred twenty-one".