42641929 has 4 divisors (see below), whose sum is σ = 46518480. Its totient is φ = 38765380.

The previous prime is 42641881. The next prime is 42641969. The reversal of 42641929 is 92914624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42641929 - 2⁷ = 42641801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42641969) 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, 1938259 + ... + 1938280.

It is an arithmetic number, because the mean of its divisors is an integer number (11629620).

Almost surely, 2^42641929 is an apocalyptic number.

It is an amenable number.

42641929 is a deficient number, since it is larger than the sum of its proper divisors (3876551).

42641929 is a wasteful number, since it uses less digits than its factorization.

42641929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876550.

The product of its digits is 31104, while the sum is 37.

The square root of 42641929 is about 6530.0787897238. The cubic root of 42641929 is about 349.3646405190.

The spelling of 42641929 in words is "forty-two million, six hundred forty-one thousand, nine hundred twenty-nine".