42890767 has 2 divisors, whose sum is σ = 42890768. Its totient is φ = 42890766.

The previous prime is 42890647. The next prime is 42890789. The reversal of 42890767 is 76709824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42890767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42894767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21445383 + 21445384.

It is an arithmetic number, because the mean of its divisors is an integer number (21445384).

Almost surely, 2^42890767 is an apocalyptic number.

42890767 is a deficient number, since it is larger than the sum of its proper divisors (1).

42890767 is an equidigital number, since it uses as much as digits as its factorization.

42890767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 42890767 is about 6549.1042899010. The cubic root of 42890767 is about 350.0428981433.

The spelling of 42890767 in words is "forty-two million, eight hundred ninety thousand, seven hundred sixty-seven".