42177101 has 4 divisors (see below), whose sum is σ = 44010912. Its totient is φ = 40343292.

The previous prime is 42177097. The next prime is 42177127. The reversal of 42177101 is 10177124.

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 not a de Polignac number, because 42177101 - 2² = 42177097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1833787 = 42177101 / (4 + 2 + 1 + 7 + 7 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42177301) 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, 916871 + ... + 916916.

It is an arithmetic number, because the mean of its divisors is an integer number (11002728).

Almost surely, 2^42177101 is an apocalyptic number.

It is an amenable number.

42177101 is a deficient number, since it is larger than the sum of its proper divisors (1833811).

42177101 is a wasteful number, since it uses less digits than its factorization.

42177101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833810.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 42177101 is about 6494.3899636532. The cubic root of 42177101 is about 348.0905569810.

Adding to 42177101 its sum of digits (23), we get a palindrome (42177124).

The spelling of 42177101 in words is "forty-two million, one hundred seventy-seven thousand, one hundred one".