42340637387 has 4 divisors (see below), whose sum is σ = 43484978976. Its totient is φ = 41196295800.

The previous prime is 42340637369. The next prime is 42340637389. The reversal of 42340637387 is 78373604324.

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

It is not a de Polignac number, because 42340637387 - 2⁶ = 42340637323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42340637389) 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, 572170739 + ... + 572170812.

It is an arithmetic number, because the mean of its divisors is an integer number (10871244744).

Almost surely, 2^42340637387 is an apocalyptic number.

42340637387 is a deficient number, since it is larger than the sum of its proper divisors (1144341589).

42340637387 is a wasteful number, since it uses less digits than its factorization.

42340637387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144341588.

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 42340637387 in words is "forty-two billion, three hundred forty million, six hundred thirty-seven thousand, three hundred eighty-seven".