42120124737 has 4 divisors (see below), whose sum is σ = 56160166320. Its totient is φ = 28080083156.

The previous prime is 42120124727. The next prime is 42120124747. The reversal of 42120124737 is 73742102124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42120124727) and next prime (42120124747).

It is a cyclic number.

It is not a de Polignac number, because 42120124737 - 2⁸ = 42120124481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42120124698 and 42120124707.

It is not an unprimeable number, because it can be changed into a prime (42120124727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7020020787 + ... + 7020020792.

It is an arithmetic number, because the mean of its divisors is an integer number (14040041580).

Almost surely, 2^42120124737 is an apocalyptic number.

It is an amenable number.

42120124737 is a deficient number, since it is larger than the sum of its proper divisors (14040041583).

42120124737 is a wasteful number, since it uses less digits than its factorization.

42120124737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14040041582.

The product of its (nonzero) digits is 18816, while the sum is 33.

The spelling of 42120124737 in words is "forty-two billion, one hundred twenty million, one hundred twenty-four thousand, seven hundred thirty-seven".