73142120357 has 2 divisors, whose sum is σ = 73142120358. Its totient is φ = 73142120356.

The previous prime is 73142120329. The next prime is 73142120399. The reversal of 73142120357 is 75302124137.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69056481796 + 4085638561 = 262786^2 + 63919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73142120357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73142122357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36571060178 + 36571060179.

It is an arithmetic number, because the mean of its divisors is an integer number (36571060179).

Almost surely, 2^73142120357 is an apocalyptic number.

It is an amenable number.

73142120357 is a deficient number, since it is larger than the sum of its proper divisors (1).

73142120357 is an equidigital number, since it uses as much as digits as its factorization.

73142120357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 73142120357 in words is "seventy-three billion, one hundred forty-two million, one hundred twenty thousand, three hundred fifty-seven".