402427401 has 4 divisors (see below), whose sum is σ = 536569872. Its totient is φ = 268284932.

The previous prime is 402427397. The next prime is 402427427. The reversal of 402427401 is 104724204.

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 402427401 - 2² = 402427397 is a prime.

It is a super-2 number, since 2×402427401² = 323895626151229602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402427471) 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, 67071231 + ... + 67071236.

It is an arithmetic number, because the mean of its divisors is an integer number (134142468).

Almost surely, 2^402427401 is an apocalyptic number.

It is an amenable number.

402427401 is a deficient number, since it is larger than the sum of its proper divisors (134142471).

402427401 is a wasteful number, since it uses less digits than its factorization.

402427401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134142470.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 402427401 is about 20060.5932364923. The cubic root of 402427401 is about 738.2937319021.

The spelling of 402427401 in words is "four hundred two million, four hundred twenty-seven thousand, four hundred one".