42718158437 has 2 divisors, whose sum is σ = 42718158438. Its totient is φ = 42718158436.

The previous prime is 42718158407. The next prime is 42718158443. The reversal of 42718158437 is 73485181724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30985152676 + 11733005761 = 176026^2 + 108319^2 .

It is a cyclic number.

It is not a de Polignac number, because 42718158437 - 2²⁴ = 42701381221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42718158407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21359079218 + 21359079219.

It is an arithmetic number, because the mean of its divisors is an integer number (21359079219).

Almost surely, 2^42718158437 is an apocalyptic number.

It is an amenable number.

42718158437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42718158437 is an equidigital number, since it uses as much as digits as its factorization.

42718158437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 50.

The spelling of 42718158437 in words is "forty-two billion, seven hundred eighteen million, one hundred fifty-eight thousand, four hundred thirty-seven".