73142139 has 16 divisors (see below), whose sum is σ = 116301312. Its totient is φ = 39978048.

The previous prime is 73142137. The next prime is 73142149. The reversal of 73142139 is 93124137.

It is not a de Polignac number, because 73142139 - 2¹ = 73142137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73142137) 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, 75234 + ... + 76199.

It is an arithmetic number, because the mean of its divisors is an integer number (7268832).

Almost surely, 2^73142139 is an apocalyptic number.

73142139 is a deficient number, since it is larger than the sum of its proper divisors (43159173).

73142139 is a wasteful number, since it uses less digits than its factorization.

73142139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151466.

The product of its digits is 4536, while the sum is 30.

The square root of 73142139 is about 8552.3177560238. The cubic root of 73142139 is about 418.2049981552.

It can be divided in two parts, 7314 and 2139, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 73142139 in words is "seventy-three million, one hundred forty-two thousand, one hundred thirty-nine".