402142004431 has 4 divisors (see below), whose sum is σ = 403824607200. Its totient is φ = 400459401664.

The previous prime is 402142004419. The next prime is 402142004441. The reversal of 402142004431 is 134400241204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402142004431 - 2⁵ = 402142004399 is a prime.

It is a super-3 number, since 3×402142004431³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402142004396 and 402142004405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402142004441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841301026 + ... + 841301503.

It is an arithmetic number, because the mean of its divisors is an integer number (100956151800).

Almost surely, 2^402142004431 is an apocalyptic number.

402142004431 is a deficient number, since it is larger than the sum of its proper divisors (1682602769).

402142004431 is a wasteful number, since it uses less digits than its factorization.

402142004431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682602768.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 402142004431 its reverse (134400241204), we get a palindrome (536542245635).

The spelling of 402142004431 in words is "four hundred two billion, one hundred forty-two million, four thousand, four hundred thirty-one".