42120401239 has 16 divisors (see below), whose sum is σ = 50349934080. Its totient is φ = 34451413920.

The previous prime is 42120401231. The next prime is 42120401317. The reversal of 42120401239 is 93210402124.

42120401239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42120401239 - 2³ = 42120401231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120401231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242929 + ... + 378490.

It is an arithmetic number, because the mean of its divisors is an integer number (3146870880).

Almost surely, 2^42120401239 is an apocalyptic number.

42120401239 is a deficient number, since it is larger than the sum of its proper divisors (8229532841).

42120401239 is a wasteful number, since it uses less digits than its factorization.

42120401239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621870.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 42120401239 in words is "forty-two billion, one hundred twenty million, four hundred one thousand, two hundred thirty-nine".