42374791 has 2 divisors, whose sum is σ = 42374792. Its totient is φ = 42374790.

The previous prime is 42374767. The next prime is 42374797. The reversal of 42374791 is 19747324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42374791 is a prime.

It is equal to p_2569069 and since 42374791 and 2569069 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42374791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42374797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21187395 + 21187396.

It is an arithmetic number, because the mean of its divisors is an integer number (21187396).

Almost surely, 2^42374791 is an apocalyptic number.

42374791 is a deficient number, since it is larger than the sum of its proper divisors (1).

42374791 is an equidigital number, since it uses as much as digits as its factorization.

42374791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 42374791 is about 6509.5922299327. The cubic root of 42374791 is about 348.6335592737.

The spelling of 42374791 in words is "forty-two million, three hundred seventy-four thousand, seven hundred ninety-one".