69842431 has 4 divisors (see below), whose sum is σ = 70495272. Its totient is φ = 69189592.

The previous prime is 69842429. The next prime is 69842441. The reversal of 69842431 is 13424896.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69842431 - 2¹ = 69842429 is a prime.

It is a super-2 number, since 2×69842431² = 9755930335979522, 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 (69842401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326260 + ... + 326473.

It is an arithmetic number, because the mean of its divisors is an integer number (17623818).

Almost surely, 2^69842431 is an apocalyptic number.

69842431 is a deficient number, since it is larger than the sum of its proper divisors (652841).

69842431 is a wasteful number, since it uses less digits than its factorization.

69842431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652840.

The product of its digits is 41472, while the sum is 37.

The square root of 69842431 is about 8357.1784114018. The cubic root of 69842431 is about 411.8190658537.

The spelling of 69842431 in words is "sixty-nine million, eight hundred forty-two thousand, four hundred thirty-one".