397242153 has 108 divisors (see below), whose sum is σ = 762641152. Its totient is φ = 194832000.

The previous prime is 397242143. The next prime is 397242163. The reversal of 397242153 is 351242793.

It is an interprime number because it is at equal distance from previous prime (397242143) and next prime (397242163).

It is not a de Polignac number, because 397242153 - 2²¹ = 395145001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397242143) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 9688813 + ... + 9688853.

Almost surely, 2^397242153 is an apocalyptic number.

397242153 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

397242153 is a deficient number, since it is larger than the sum of its proper divisors (365398999).

397242153 is a wasteful number, since it uses less digits than its factorization.

397242153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 93 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 397242153 is about 19930.9345741739. The cubic root of 397242153 is about 735.1090605902.

The spelling of 397242153 in words is "three hundred ninety-seven million, two hundred forty-two thousand, one hundred fifty-three".