72020134 has 4 divisors (see below), whose sum is σ = 108030204. Its totient is φ = 36010066.

The previous prime is 72020111. The next prime is 72020159. The reversal of 72020134 is 43102027.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18005032 + ... + 18005035.

It is an arithmetic number, because the mean of its divisors is an integer number (27007551).

Almost surely, 2^72020134 is an apocalyptic number.

72020134 is a deficient number, since it is larger than the sum of its proper divisors (36010070).

72020134 is a wasteful number, since it uses less digits than its factorization.

72020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36010069.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 72020134 is about 8486.4676986365. The cubic root of 72020134 is about 416.0555391516.

The spelling of 72020134 in words is "seventy-two million, twenty thousand, one hundred thirty-four".