42869391 has 8 divisors (see below), whose sum is σ = 57190320. Its totient is φ = 28564032.

The previous prime is 42869389. The next prime is 42869423. The reversal of 42869391 is 19396824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42869391 - 2¹ = 42869389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42869371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501 + ... + 11313.

It is an arithmetic number, because the mean of its divisors is an integer number (7148790).

Almost surely, 2^42869391 is an apocalyptic number.

42869391 is a deficient number, since it is larger than the sum of its proper divisors (14320929).

42869391 is a wasteful number, since it uses less digits than its factorization.

42869391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785.

The product of its digits is 93312, while the sum is 42.

The square root of 42869391 is about 6547.4721076153. The cubic root of 42869391 is about 349.9847367494.

The spelling of 42869391 in words is "forty-two million, eight hundred sixty-nine thousand, three hundred ninety-one".