42973751 has 4 divisors (see below), whose sum is σ = 42987504. Its totient is φ = 42960000.

The previous prime is 42973747. The next prime is 42973753. The reversal of 42973751 is 15737924.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42973751 - 2² = 42973747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42973753) 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, 326 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (10746876).

Almost surely, 2^42973751 is an apocalyptic number.

42973751 is a deficient number, since it is larger than the sum of its proper divisors (13753).

42973751 is an equidigital number, since it uses as much as digits as its factorization.

42973751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13752.

The product of its digits is 52920, while the sum is 38.

The square root of 42973751 is about 6555.4367512775. The cubic root of 42973751 is about 350.2685041672.

The spelling of 42973751 in words is "forty-two million, nine hundred seventy-three thousand, seven hundred fifty-one".