721482542 has 16 divisors (see below), whose sum is σ = 1184464512. Its totient is φ = 326875320.

The previous prime is 721482539. The next prime is 721482547. The reversal of 721482542 is 245284127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721482547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46658 + ... + 60165.

It is an arithmetic number, because the mean of its divisors is an integer number (74029032).

Almost surely, 2^721482542 is an apocalyptic number.

721482542 is a deficient number, since it is larger than the sum of its proper divisors (462981970).

721482542 is a wasteful number, since it uses less digits than its factorization.

721482542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107143.

The product of its digits is 35840, while the sum is 35.

The square root of 721482542 is about 26860.4270628745. The cubic root of 721482542 is about 896.8957007804.

The spelling of 721482542 in words is "seven hundred twenty-one million, four hundred eighty-two thousand, five hundred forty-two".