72842402 has 8 divisors (see below), whose sum is σ = 109447212. Its totient is φ = 36360000.

The previous prime is 72842389. The next prime is 72842423. The reversal of 72842402 is 20424827.

It can be written as a sum of positive squares in 2 ways, for example, as 57168721 + 15673681 = 7561^2 + 3959^2 .

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

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, 29099 + ... + 31502.

Almost surely, 2^72842402 is an apocalyptic number.

72842402 is a deficient number, since it is larger than the sum of its proper divisors (36604810).

72842402 is a wasteful number, since it uses less digits than its factorization.

72842402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61204.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 72842402 is about 8534.7760368975. The cubic root of 72842402 is about 417.6329470110.

It can be divided in two parts, 72 and 842402, that multiplied together give a square (60652944 = 7788²).

The spelling of 72842402 in words is "seventy-two million, eight hundred forty-two thousand, four hundred two".