42909610 has 8 divisors (see below), whose sum is σ = 77237316. Its totient is φ = 17163840.

The previous prime is 42909577. The next prime is 42909613. The reversal of 42909610 is 1690924.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42732369 + 177241 = 6537^2 + 421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42909613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145471 + ... + 2145490.

Almost surely, 2^42909610 is an apocalyptic number.

42909610 is a deficient number, since it is larger than the sum of its proper divisors (34327706).

42909610 is a wasteful number, since it uses less digits than its factorization.

42909610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290968.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 42909610 is about 6550.5427256068. The cubic root of 42909610 is about 350.0941515413.

The spelling of 42909610 in words is "forty-two million, nine hundred nine thousand, six hundred ten".