72437242 has 16 divisors (see below), whose sum is σ = 111607272. Its totient is φ = 35239680.

The previous prime is 72437227. The next prime is 72437257. The reversal of 72437242 is 24273427.

It is an interprime number because it is at equal distance from previous prime (72437227) and next prime (72437257).

It can be written as a sum of positive squares in 4 ways, for example, as 62583921 + 9853321 = 7911^2 + 3139^2 .

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, 36508 + ... + 38440.

Almost surely, 2^72437242 is an apocalyptic number.

72437242 is a deficient number, since it is larger than the sum of its proper divisors (39170030).

72437242 is a wasteful number, since it uses less digits than its factorization.

72437242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433.

The product of its digits is 18816, while the sum is 31.

The square root of 72437242 is about 8511.0071084449. The cubic root of 72437242 is about 416.8571952817.

The spelling of 72437242 in words is "seventy-two million, four hundred thirty-seven thousand, two hundred forty-two".