42102877 has 4 divisors (see below), whose sum is σ = 42381856. Its totient is φ = 41823900.

The previous prime is 42102839. The next prime is 42102887. The reversal of 42102877 is 77820124.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42102877 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 (42102887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139263 + ... + 139564.

It is an arithmetic number, because the mean of its divisors is an integer number (10595464).

Almost surely, 2^42102877 is an apocalyptic number.

It is an amenable number.

42102877 is a deficient number, since it is larger than the sum of its proper divisors (278979).

42102877 is a wasteful number, since it uses less digits than its factorization.

42102877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278978.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 42102877 is about 6488.6729768112. The cubic root of 42102877 is about 347.8862451335.

The spelling of 42102877 in words is "forty-two million, one hundred two thousand, eight hundred seventy-seven".