42039469 has 4 divisors (see below), whose sum is σ = 43867296. Its totient is φ = 40211644.

The previous prime is 42039467. The next prime is 42039523. The reversal of 42039469 is 96493024.

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 42039469 - 2¹ = 42039467 is a prime.

It is a super-2 number, since 2×42039469² = 3534633907603922, 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 (42039461) 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, 913879 + ... + 913924.

It is an arithmetic number, because the mean of its divisors is an integer number (10966824).

Almost surely, 2^42039469 is an apocalyptic number.

It is an amenable number.

42039469 is a deficient number, since it is larger than the sum of its proper divisors (1827827).

42039469 is a wasteful number, since it uses less digits than its factorization.

42039469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827826.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 42039469 is about 6483.7850828046. The cubic root of 42039469 is about 347.7115155539.

The spelling of 42039469 in words is "forty-two million, thirty-nine thousand, four hundred sixty-nine".