42137699 has 2 divisors, whose sum is σ = 42137700. Its totient is φ = 42137698.

The previous prime is 42137681. The next prime is 42137723. The reversal of 42137699 is 99673124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42137699 - 2⁸ = 42137443 is a prime.

It is not a weakly prime, because it can be changed into another prime (42137659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21068849 + 21068850.

It is an arithmetic number, because the mean of its divisors is an integer number (21068850).

Almost surely, 2^42137699 is an apocalyptic number.

42137699 is a deficient number, since it is larger than the sum of its proper divisors (1).

42137699 is an equidigital number, since it uses as much as digits as its factorization.

42137699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 42137699 is about 6491.3557135625. The cubic root of 42137699 is about 347.9821273906.

The spelling of 42137699 in words is "forty-two million, one hundred thirty-seven thousand, six hundred ninety-nine".