72142049 has 16 divisors (see below), whose sum is σ = 84217728. Its totient is φ = 60521472.

The previous prime is 72142043. The next prime is 72142079. The reversal of 72142049 is 94024127.

It is a cyclic number.

It is not a de Polignac number, because 72142049 - 2⁸ = 72141793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72142043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90119 + ... + 90915.

It is an arithmetic number, because the mean of its divisors is an integer number (5263608).

Almost surely, 2^72142049 is an apocalyptic number.

It is an amenable number.

72142049 is a deficient number, since it is larger than the sum of its proper divisors (12075679).

72142049 is a wasteful number, since it uses less digits than its factorization.

72142049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72142049 is about 8493.6475674471. The cubic root of 72142049 is about 416.2901717641.

The spelling of 72142049 in words is "seventy-two million, one hundred forty-two thousand, forty-nine".