42128097637 has 8 divisors (see below), whose sum is σ = 43963504704. Its totient is φ = 40293003168.

The previous prime is 42128097623. The next prime is 42128097691. The reversal of 42128097637 is 73679082124.

It is a happy number.

42128097637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42128097637 is a prime.

It is a super-2 number, since 2×42128097637² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42128097337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221793 + ... + 365305.

It is an arithmetic number, because the mean of its divisors is an integer number (5495438088).

Almost surely, 2^42128097637 is an apocalyptic number.

It is an amenable number.

42128097637 is a deficient number, since it is larger than the sum of its proper divisors (1835407067).

42128097637 is a wasteful number, since it uses less digits than its factorization.

42128097637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156299.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 42128097637 in words is "forty-two billion, one hundred twenty-eight million, ninety-seven thousand, six hundred thirty-seven".