402252423 has 4 divisors (see below), whose sum is σ = 536336568. Its totient is φ = 268168280.

The previous prime is 402252421. The next prime is 402252427. The reversal of 402252423 is 324252204.

It is a happy number.

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 402252423 - 2¹ = 402252421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402252393 and 402252402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402252421) 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, 67042068 + ... + 67042073.

It is an arithmetic number, because the mean of its divisors is an integer number (134084142).

Almost surely, 2^402252423 is an apocalyptic number.

402252423 is a deficient number, since it is larger than the sum of its proper divisors (134084145).

402252423 is a wasteful number, since it uses less digits than its factorization.

402252423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134084144.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402252423 is about 20056.2315253888. The cubic root of 402252423 is about 738.1867114487.

The spelling of 402252423 in words is "four hundred two million, two hundred fifty-two thousand, four hundred twenty-three".