42634505 has 4 divisors (see below), whose sum is σ = 51161412. Its totient is φ = 34107600.

The previous prime is 42634489. The next prime is 42634511. The reversal of 42634505 is 50543624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12866569 + 29767936 = 3587^2 + 5456^2 .

It is not a de Polignac number, because 42634505 - 2⁴ = 42634489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4263446 + ... + 4263455.

It is an arithmetic number, because the mean of its divisors is an integer number (12790353).

Almost surely, 2^42634505 is an apocalyptic number.

It is an amenable number.

42634505 is a deficient number, since it is larger than the sum of its proper divisors (8526907).

42634505 is an equidigital number, since it uses as much as digits as its factorization.

42634505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526906.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 42634505 is about 6529.5103185461. The cubic root of 42634505 is about 349.3443644379.

The spelling of 42634505 in words is "forty-two million, six hundred thirty-four thousand, five hundred five".