42340394 has 8 divisors (see below), whose sum is σ = 63548388. Its totient is φ = 21157600.

The previous prime is 42340367. The next prime is 42340399. The reversal of 42340394 is 49304324.

It can be written as a sum of positive squares in 2 ways, for example, as 41770369 + 570025 = 6463^2 + 755^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42340399) 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, 1307 + ... + 9294.

Almost surely, 2^42340394 is an apocalyptic number.

42340394 is a deficient number, since it is larger than the sum of its proper divisors (21207994).

42340394 is a wasteful number, since it uses less digits than its factorization.

42340394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12600.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 42340394 is about 6506.9496693919. The cubic root of 42340394 is about 348.5392013275.

The spelling of 42340394 in words is "forty-two million, three hundred forty thousand, three hundred ninety-four".