402022523 has 24 divisors (see below), whose sum is σ = 477036000. Its totient is φ = 331841664.

The previous prime is 402022487. The next prime is 402022529. The reversal of 402022523 is 325220204.

It is not a de Polignac number, because 402022523 - 2⁶ = 402022459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402022495 and 402022504.

It is not an unprimeable number, because it can be changed into a prime (402022529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1151753 + ... + 1152101.

It is an arithmetic number, because the mean of its divisors is an integer number (19876500).

Almost surely, 2^402022523 is an apocalyptic number.

402022523 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

402022523 is a deficient number, since it is larger than the sum of its proper divisors (75013477).

402022523 is an equidigital number, since it uses as much as digits as its factorization.

402022523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 402022523 is about 20050.4993204658. The cubic root of 402022523 is about 738.0460522864.

Adding to 402022523 its reverse (325220204), we get a palindrome (727242727).

The spelling of 402022523 in words is "four hundred two million, twenty-two thousand, five hundred twenty-three".