42124980621377 has 4 divisors (see below), whose sum is σ = 42338813010516. Its totient is φ = 41911148232240.

The previous prime is 42124980621337. The next prime is 42124980621397. The reversal of 42124980621377 is 77312608942124.

It is a Cunningham number, because it is equal to 6490376²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41273994666256 + 850985955121 = 6424484^2 + 922489^2 .

It is a cyclic number.

It is not a de Polignac number, because 42124980621377 - 2²⁸ = 42124712185921 is a prime.

It is a super-2 number, since 2×42124980621377² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42124980621337) 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, 106916194274 + ... + 106916194667.

It is an arithmetic number, because the mean of its divisors is an integer number (10584703252629).

Almost surely, 2^{42124980621377} is an apocalyptic number.

It is an amenable number.

42124980621377 is a deficient number, since it is larger than the sum of its proper divisors (213832389139).

42124980621377 is a wasteful number, since it uses less digits than its factorization.

42124980621377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213832389138.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 42124980621377 in words is "forty-two trillion, one hundred twenty-four billion, nine hundred eighty million, six hundred twenty-one thousand, three hundred seventy-seven".