42770407 has 2 divisors, whose sum is σ = 42770408. Its totient is φ = 42770406.

The previous prime is 42770383. The next prime is 42770437. The reversal of 42770407 is 70407724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42770407 - 2⁷ = 42770279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42770437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21385203 + 21385204.

It is an arithmetic number, because the mean of its divisors is an integer number (21385204).

Almost surely, 2^42770407 is an apocalyptic number.

42770407 is a deficient number, since it is larger than the sum of its proper divisors (1).

42770407 is an equidigital number, since it uses as much as digits as its factorization.

42770407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 42770407 is about 6539.9087914129. The cubic root of 42770407 is about 349.7151614516.

The spelling of 42770407 in words is "forty-two million, seven hundred seventy thousand, four hundred seven".