402220157 has 2 divisors, whose sum is σ = 402220158. Its totient is φ = 402220156.

The previous prime is 402220123. The next prime is 402220171. The reversal of 402220157 is 751022204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260467321 + 141752836 = 16139^2 + 11906^2 .

It is a cyclic number.

It is not a de Polignac number, because 402220157 - 2⁸ = 402219901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402220957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201110078 + 201110079.

It is an arithmetic number, because the mean of its divisors is an integer number (201110079).

Almost surely, 2^402220157 is an apocalyptic number.

It is an amenable number.

402220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

402220157 is an equidigital number, since it uses as much as digits as its factorization.

402220157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 402220157 is about 20055.4271208568. The cubic root of 402220157 is about 738.1669734534.

The spelling of 402220157 in words is "four hundred two million, two hundred twenty thousand, one hundred fifty-seven".