42345378 has 12 divisors (see below), whose sum is σ = 91748358. Its totient is φ = 14115120.

The previous prime is 42345341. The next prime is 42345389. The reversal of 42345378 is 87354324.

It is a happy number.

42345378 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 25674489 + 16670889 = 5067^2 + 4083^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1176243 + ... + 1176278.

Almost surely, 2^42345378 is an apocalyptic number.

42345378 is an abundant number, since it is smaller than the sum of its proper divisors (49402980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42345378 is a wasteful number, since it uses less digits than its factorization.

42345378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352529 (or 2352526 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 42345378 is about 6507.3326332684. The cubic root of 42345378 is about 348.5528766153.

The spelling of 42345378 in words is "forty-two million, three hundred forty-five thousand, three hundred seventy-eight".