42955567 has 2 divisors, whose sum is σ = 42955568. Its totient is φ = 42955566.

The previous prime is 42955547. The next prime is 42955579. The reversal of 42955567 is 76555924.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42955567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42955537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21477783 + 21477784.

It is an arithmetic number, because the mean of its divisors is an integer number (21477784).

Almost surely, 2^42955567 is an apocalyptic number.

42955567 is a deficient number, since it is larger than the sum of its proper divisors (1).

42955567 is an equidigital number, since it uses as much as digits as its factorization.

42955567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 43.

The square root of 42955567 is about 6554.0496641390. The cubic root of 42955567 is about 350.2190927558.

The spelling of 42955567 in words is "forty-two million, nine hundred fifty-five thousand, five hundred sixty-seven".