401232157 has 2 divisors, whose sum is σ = 401232158. Its totient is φ = 401232156.

The previous prime is 401232133. The next prime is 401232173. The reversal of 401232157 is 751232104.

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., 226833721 + 174398436 = 15061^2 + 13206^2 .

It is a cyclic number.

It is not a de Polignac number, because 401232157 - 2¹⁹ = 400707869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401232127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200616078 + 200616079.

It is an arithmetic number, because the mean of its divisors is an integer number (200616079).

Almost surely, 2^401232157 is an apocalyptic number.

It is an amenable number.

401232157 is a deficient number, since it is larger than the sum of its proper divisors (1).

401232157 is an equidigital number, since it uses as much as digits as its factorization.

401232157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 401232157 is about 20030.7802394215. The cubic root of 401232157 is about 737.5620750968.

The spelling of 401232157 in words is "four hundred one million, two hundred thirty-two thousand, one hundred fifty-seven".