42992539 has 2 divisors, whose sum is σ = 42992540. Its totient is φ = 42992538.

The previous prime is 42992519. The next prime is 42992563. The reversal of 42992539 is 93529924.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42992539 - 2¹¹ = 42990491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42992495 and 42992504.

It is not a weakly prime, because it can be changed into another prime (42992519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21496269 + 21496270.

It is an arithmetic number, because the mean of its divisors is an integer number (21496270).

Almost surely, 2^42992539 is an apocalyptic number.

42992539 is a deficient number, since it is larger than the sum of its proper divisors (1).

42992539 is an equidigital number, since it uses as much as digits as its factorization.

42992539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 42992539 is about 6556.8696037057. The cubic root of 42992539 is about 350.3195421899.

The spelling of 42992539 in words is "forty-two million, nine hundred ninety-two thousand, five hundred thirty-nine".