72646142 has 16 divisors (see below), whose sum is σ = 110149200. Its totient is φ = 35932032.

The previous prime is 72646111. The next prime is 72646153. The reversal of 72646142 is 24164627.

It is a junction number, because it is equal to n+sod(n) for n = 72646099 and 72646108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128753 + ... + 129315.

It is an arithmetic number, because the mean of its divisors is an integer number (6884325).

Almost surely, 2^72646142 is an apocalyptic number.

72646142 is a deficient number, since it is larger than the sum of its proper divisors (37503058).

72646142 is a wasteful number, since it uses less digits than its factorization.

72646142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147.

The product of its digits is 16128, while the sum is 32.

The square root of 72646142 is about 8523.2706163773. The cubic root of 72646142 is about 417.2575321289.

The spelling of 72646142 in words is "seventy-two million, six hundred forty-six thousand, one hundred forty-two".