397242154 has 8 divisors (see below), whose sum is σ = 621770400. Its totient is φ = 189985356.

The previous prime is 397242143. The next prime is 397242163. The reversal of 397242154 is 451242793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317804 + ... + 4317895.

It is an arithmetic number, because the mean of its divisors is an integer number (77721300).

Almost surely, 2^397242154 is an apocalyptic number.

397242154 is a deficient number, since it is larger than the sum of its proper divisors (224528246).

397242154 is a wasteful number, since it uses less digits than its factorization.

397242154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635724.

The product of its digits is 60480, while the sum is 37.

The square root of 397242154 is about 19930.9345992605. The cubic root of 397242154 is about 735.1090612070.

The spelling of 397242154 in words is "three hundred ninety-seven million, two hundred forty-two thousand, one hundred fifty-four".