42869429 has 6 divisors (see below), whose sum is σ = 43425270. Its totient is φ = 42320616.

The previous prime is 42869423. The next prime is 42869471. The reversal of 42869429 is 92496824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23990404 + 18879025 = 4898^2 + 4345^2 .

It is not a de Polignac number, because 42869429 - 2²⁰ = 41820853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42869429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42869423) 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, 2807 + ... + 9675.

It is an arithmetic number, because the mean of its divisors is an integer number (7237545).

Almost surely, 2^42869429 is an apocalyptic number.

It is an amenable number.

42869429 is a deficient number, since it is larger than the sum of its proper divisors (555841).

42869429 is an frugal number, since it uses more digits than its factorization.

42869429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7027 (or 6948 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 42869429 is about 6547.4750094979. The cubic root of 42869429 is about 349.9848401597.

The spelling of 42869429 in words is "forty-two million, eight hundred sixty-nine thousand, four hundred twenty-nine".