42349869 has 6 divisors (see below), whose sum is σ = 61172046. Its totient is φ = 28233240.

The previous prime is 42349861. The next prime is 42349933. The reversal of 42349869 is 96894324.

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 15444900 = 5187^2 + 3930^2 .

It is not a de Polignac number, because 42349869 - 2³ = 42349861 is a prime.

It is a super-2 number, since 2×42349869² = 3587022808634322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42349861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2352762 + ... + 2352779.

It is an arithmetic number, because the mean of its divisors is an integer number (10195341).

Almost surely, 2^42349869 is an apocalyptic number.

It is an amenable number.

42349869 is a deficient number, since it is larger than the sum of its proper divisors (18822177).

42349869 is a wasteful number, since it uses less digits than its factorization.

42349869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705547 (or 4705544 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 42349869 is about 6507.6776963829. The cubic root of 42349869 is about 348.5651982720.

The spelling of 42349869 in words is "forty-two million, three hundred forty-nine thousand, eight hundred sixty-nine".