42745956937 has 4 divisors (see below), whose sum is σ = 42818778576. Its totient is φ = 42673135300.

The previous prime is 42745956893. The next prime is 42745956949. The reversal of 42745956937 is 73965954724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42745956937 - 2⁷ = 42745956809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42745953937) 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, 36409939 + ... + 36411112.

It is an arithmetic number, because the mean of its divisors is an integer number (10704694644).

Almost surely, 2^42745956937 is an apocalyptic number.

It is an amenable number.

42745956937 is a deficient number, since it is larger than the sum of its proper divisors (72821639).

42745956937 is an equidigital number, since it uses as much as digits as its factorization.

42745956937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72821638.

The product of its digits is 57153600, while the sum is 61.

The spelling of 42745956937 in words is "forty-two billion, seven hundred forty-five million, nine hundred fifty-six thousand, nine hundred thirty-seven".