72400342 has 48 divisors (see below), whose sum is σ = 133183008. Its totient is φ = 29393280.

The previous prime is 72400259. The next prime is 72400357. The reversal of 72400342 is 24300427.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148423 + ... + 148909.

It is an arithmetic number, because the mean of its divisors is an integer number (2774646).

Almost surely, 2^72400342 is an apocalyptic number.

72400342 is a deficient number, since it is larger than the sum of its proper divisors (60782666).

72400342 is a wasteful number, since it uses less digits than its factorization.

72400342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 72400342 is about 8508.8390512455. The cubic root of 72400342 is about 416.7864000079.

Adding to 72400342 its reverse (24300427), we get a palindrome (96700769).

The spelling of 72400342 in words is "seventy-two million, four hundred thousand, three hundred forty-two".