731402042 has 8 divisors (see below), whose sum is σ = 1253832096. Its totient is φ = 313458012.

The previous prime is 731402029. The next prime is 731402053. The reversal of 731402042 is 240204137.

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

It is a junction number, because it is equal to n+sod(n) for n = 731401999 and 731402017.

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, 26121488 + ... + 26121515.

It is an arithmetic number, because the mean of its divisors is an integer number (156729012).

Almost surely, 2^731402042 is an apocalyptic number.

731402042 is a deficient number, since it is larger than the sum of its proper divisors (522430054).

731402042 is a wasteful number, since it uses less digits than its factorization.

731402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52243012.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 731402042 is about 27044.4456774399. The cubic root of 731402042 is about 900.9874109425.

Adding to 731402042 its reverse (240204137), we get a palindrome (971606179).

The spelling of 731402042 in words is "seven hundred thirty-one million, four hundred two thousand, forty-two".