402234419021 has 2 divisors, whose sum is σ = 402234419022. Its totient is φ = 402234419020.

The previous prime is 402234419003. The next prime is 402234419053. The reversal of 402234419021 is 120914432204.

It is an a-pointer prime, because the next prime (402234419053) can be obtained adding 402234419021 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389112716521 + 13121702500 = 623789^2 + 114550^2 .

It is a cyclic number.

It is not a de Polignac number, because 402234419021 - 2²² = 402230224717 is a prime.

It is a super-2 number, since 2×402234419021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402234419221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201117209510 + 201117209511.

It is an arithmetic number, because the mean of its divisors is an integer number (201117209511).

Almost surely, 2^402234419021 is an apocalyptic number.

It is an amenable number.

402234419021 is a deficient number, since it is larger than the sum of its proper divisors (1).

402234419021 is an equidigital number, since it uses as much as digits as its factorization.

402234419021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 402234419021 in words is "four hundred two billion, two hundred thirty-four million, four hundred nineteen thousand, twenty-one".