42123432137 has 2 divisors, whose sum is σ = 42123432138. Its totient is φ = 42123432136.

The previous prime is 42123432101. The next prime is 42123432157. The reversal of 42123432137 is 73123432124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25898786761 + 16224645376 = 160931^2 + 127376^2 .

It is a cyclic number.

It is not a de Polignac number, because 42123432137 - 2¹⁶ = 42123366601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42123432157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061716068 + 21061716069.

It is an arithmetic number, because the mean of its divisors is an integer number (21061716069).

Almost surely, 2^42123432137 is an apocalyptic number.

It is an amenable number.

42123432137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123432137 is an equidigital number, since it uses as much as digits as its factorization.

42123432137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 32.

The spelling of 42123432137 in words is "forty-two billion, one hundred twenty-three million, four hundred thirty-two thousand, one hundred thirty-seven".