726421402 has 16 divisors (see below), whose sum is σ = 1254386880. Its totient is φ = 309050208.

The previous prime is 726421387. The next prime is 726421411. The reversal of 726421402 is 204124627.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187452 + ... + 191287.

It is an arithmetic number, because the mean of its divisors is an integer number (78399180).

Almost surely, 2^726421402 is an apocalyptic number.

726421402 is a deficient number, since it is larger than the sum of its proper divisors (527965478).

726421402 is a wasteful number, since it uses less digits than its factorization.

726421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378885.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 726421402 is about 26952.2058837491. The cubic root of 726421402 is about 898.9375949370.

The spelling of 726421402 in words is "seven hundred twenty-six million, four hundred twenty-one thousand, four hundred two".