397043542 has 16 divisors (see below), whose sum is σ = 684214272. Its totient is φ = 169269480.

The previous prime is 397043539. The next prime is 397043557. The reversal of 397043542 is 245340793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71568 + ... + 76915.

It is an arithmetic number, because the mean of its divisors is an integer number (42763392).

Almost surely, 2^397043542 is an apocalyptic number.

397043542 is a deficient number, since it is larger than the sum of its proper divisors (287170730).

397043542 is a wasteful number, since it uses less digits than its factorization.

397043542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148683.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 397043542 is about 19925.9514703815. The cubic root of 397043542 is about 734.9865282057.

The spelling of 397043542 in words is "three hundred ninety-seven million, forty-three thousand, five hundred forty-two".