42101669 has 4 divisors (see below), whose sum is σ = 42380640. Its totient is φ = 41822700.

The previous prime is 42101659. The next prime is 42101681. The reversal of 42101669 is 96610124.

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 42101669 - 2²⁰ = 41053093 is a prime.

It is a super-2 number, since 2×42101669² = 3545101065171122, which 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 (42101659) 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, 139259 + ... + 139560.

It is an arithmetic number, because the mean of its divisors is an integer number (10595160).

Almost surely, 2^42101669 is an apocalyptic number.

It is an amenable number.

42101669 is a deficient number, since it is larger than the sum of its proper divisors (278971).

42101669 is a wasteful number, since it uses less digits than its factorization.

42101669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278970.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 42101669 is about 6488.5798908544. The cubic root of 42101669 is about 347.8829179610.

The spelling of 42101669 in words is "forty-two million, one hundred one thousand, six hundred sixty-nine".