72102347 has 2 divisors, whose sum is σ = 72102348. Its totient is φ = 72102346.

The previous prime is 72102337. The next prime is 72102361. The reversal of 72102347 is 74320127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72102347 - 2²⁰ = 71053771 is a prime.

It is not a weakly prime, because it can be changed into another prime (72102337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36051173 + 36051174.

It is an arithmetic number, because the mean of its divisors is an integer number (36051174).

Almost surely, 2^72102347 is an apocalyptic number.

72102347 is a deficient number, since it is larger than the sum of its proper divisors (1).

72102347 is an equidigital number, since it uses as much as digits as its factorization.

72102347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72102347 is about 8491.3100873776. The cubic root of 72102347 is about 416.2137919669.

The spelling of 72102347 in words is "seventy-two million, one hundred two thousand, three hundred forty-seven".