42001292639 has 2 divisors, whose sum is σ = 42001292640. Its totient is φ = 42001292638.

The previous prime is 42001292633. The next prime is 42001292653. The reversal of 42001292639 is 93629210024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42001292639 - 2²⁴ = 41984515423 is a prime.

It is a super-3 number, since 3×42001292639³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42001292633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000646319 + 21000646320.

It is an arithmetic number, because the mean of its divisors is an integer number (21000646320).

Almost surely, 2^42001292639 is an apocalyptic number.

42001292639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42001292639 is an equidigital number, since it uses as much as digits as its factorization.

42001292639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 42001292639 in words is "forty-two billion, one million, two hundred ninety-two thousand, six hundred thirty-nine".