72069142 has 16 divisors (see below), whose sum is σ = 110658240. Its totient is φ = 35186688.

The previous prime is 72069139. The next prime is 72069163. The reversal of 72069142 is 24196027.

It is a super-2 number, since 2×72069142² = 10387922457232328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71788 + ... + 72784.

It is an arithmetic number, because the mean of its divisors is an integer number (6916140).

Almost surely, 2^72069142 is an apocalyptic number.

72069142 is a deficient number, since it is larger than the sum of its proper divisors (38589098).

72069142 is a wasteful number, since it uses less digits than its factorization.

72069142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72069142 is about 8489.3546280032. The cubic root of 72069142 is about 416.1498897426.

The spelling of 72069142 in words is "seventy-two million, sixty-nine thousand, one hundred forty-two".