397190142 has 40 divisors (see below), whose sum is σ = 942359616. Its totient is φ = 124607808.

The previous prime is 397190111. The next prime is 397190147. The reversal of 397190142 is 241091793.

It is a junction number, because it is equal to n+sod(n) for n = 397190097 and 397190106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397190147) 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 in 19 ways as a sum of consecutive naturals, for example, 69358 + ... + 74865.

Almost surely, 2^397190142 is an apocalyptic number.

397190142 is an abundant number, since it is smaller than the sum of its proper divisors (545169474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397190142 is a wasteful number, since it uses less digits than its factorization.

397190142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144254 (or 144245 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 397190142 is about 19929.6297507003. The cubic root of 397190142 is about 735.0769765277.

The spelling of 397190142 in words is "three hundred ninety-seven million, one hundred ninety thousand, one hundred forty-two".