42671807 has 2 divisors, whose sum is σ = 42671808. Its totient is φ = 42671806.

The previous prime is 42671753. The next prime is 42671821. The reversal of 42671807 is 70817624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42671807 - 2¹⁴ = 42655423 is a prime.

It is a super-2 number, since 2×42671807² = 3641766225290498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42671107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21335903 + 21335904.

It is an arithmetic number, because the mean of its divisors is an integer number (21335904).

Almost surely, 2^42671807 is an apocalyptic number.

42671807 is a deficient number, since it is larger than the sum of its proper divisors (1).

42671807 is an equidigital number, since it uses as much as digits as its factorization.

42671807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 42671807 is about 6532.3661103769. The cubic root of 42671807 is about 349.4462181272.

The spelling of 42671807 in words is "forty-two million, six hundred seventy-one thousand, eight hundred seven".