400697542 has 8 divisors (see below), whose sum is σ = 686910096. Its totient is φ = 171727512.

The previous prime is 400697527. The next prime is 400697567. The reversal of 400697542 is 245796004.

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

It is a congruent number.

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, 14310613 + ... + 14310640.

It is an arithmetic number, because the mean of its divisors is an integer number (85863762).

Almost surely, 2^400697542 is an apocalyptic number.

400697542 is a deficient number, since it is larger than the sum of its proper divisors (286212554).

400697542 is a wasteful number, since it uses less digits than its factorization.

400697542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28621262.

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

The square root of 400697542 is about 20017.4309540460. The cubic root of 400697542 is about 737.2343454578.

The spelling of 400697542 in words is "four hundred million, six hundred ninety-seven thousand, five hundred forty-two".