42697319 has 12 divisors (see below), whose sum is σ = 51753744. Its totient is φ = 34387392.

The previous prime is 42697307. The next prime is 42697321. The reversal of 42697319 is 91379624.

It is not a de Polignac number, because 42697319 - 2⁸ = 42697063 is a prime.

It is a super-2 number, since 2×42697319² = 3646122099575522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42697339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70982 + ... + 71580.

It is an arithmetic number, because the mean of its divisors is an integer number (4312812).

Almost surely, 2^42697319 is an apocalyptic number.

42697319 is a deficient number, since it is larger than the sum of its proper divisors (9056425).

42697319 is an frugal number, since it uses more digits than its factorization.

42697319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 623 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 42697319 is about 6534.3185566668. The cubic root of 42697319 is about 349.5158448625.

The spelling of 42697319 in words is "forty-two million, six hundred ninety-seven thousand, three hundred nineteen".