42121677 has 8 divisors (see below), whose sum is σ = 60482464. Its totient is φ = 25921008.

The previous prime is 42121669. The next prime is 42121679. The reversal of 42121677 is 77612124.

42121677 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 not a de Polignac number, because 42121677 - 2³ = 42121669 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 (42121679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539983 + ... + 540060.

It is an arithmetic number, because the mean of its divisors is an integer number (7560308).

Almost surely, 2^42121677 is an apocalyptic number.

It is an amenable number.

42121677 is a deficient number, since it is larger than the sum of its proper divisors (18360787).

42121677 is a wasteful number, since it uses less digits than its factorization.

42121677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080059.

The product of its digits is 4704, while the sum is 30.

The square root of 42121677 is about 6490.1214934699. The cubic root of 42121677 is about 347.9380174323.

The spelling of 42121677 in words is "forty-two million, one hundred twenty-one thousand, six hundred seventy-seven".