402242312201023 has 4 divisors (see below), whose sum is σ = 459705499658320. Its totient is φ = 344779124743728.

The previous prime is 402242312201017. The next prime is 402242312201033. The reversal of 402242312201023 is 320102213242204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402242312201023 is a prime.

It is a super-2 number, since 2×402242312201023² (a number of 30 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 = 402242312200982 and 402242312201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402242312201033) 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, 28731593728638 + ... + 28731593728651.

It is an arithmetic number, because the mean of its divisors is an integer number (114926374914580).

Almost surely, 2^{402242312201023} is an apocalyptic number.

402242312201023 is a deficient number, since it is larger than the sum of its proper divisors (57463187457297).

402242312201023 is an equidigital number, since it uses as much as digits as its factorization.

402242312201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57463187457296.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 402242312201023 its reverse (320102213242204), we get a palindrome (722344525443227).

The spelling of 402242312201023 in words is "four hundred two trillion, two hundred forty-two billion, three hundred twelve million, two hundred one thousand, twenty-three".