42946877 has 2 divisors, whose sum is σ = 42946878. Its totient is φ = 42946876.

The previous prime is 42946837. The next prime is 42946903. The reversal of 42946877 is 77864924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 188356 = 6539^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 42946877 - 2⁸ = 42946621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42946817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21473438 + 21473439.

It is an arithmetic number, because the mean of its divisors is an integer number (21473439).

Almost surely, 2^42946877 is an apocalyptic number.

It is an amenable number.

42946877 is a deficient number, since it is larger than the sum of its proper divisors (1).

42946877 is an equidigital number, since it uses as much as digits as its factorization.

42946877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 42946877 is about 6553.3866817089. The cubic root of 42946877 is about 350.1954744809.

The spelling of 42946877 in words is "forty-two million, nine hundred forty-six thousand, eight hundred seventy-seven".