42905929 has 8 divisors (see below), whose sum is σ = 47505888. Its totient is φ = 38422560.

The previous prime is 42905917. The next prime is 42905981. The reversal of 42905929 is 92950924.

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

It is not a de Polignac number, because 42905929 - 2⁵ = 42905897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42905891 and 42905900.

It is not an unprimeable number, because it can be changed into a prime (42905999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28372 + ... + 29845.

It is an arithmetic number, because the mean of its divisors is an integer number (5938236).

Almost surely, 2^42905929 is an apocalyptic number.

It is an amenable number.

42905929 is a deficient number, since it is larger than the sum of its proper divisors (4599959).

42905929 is a wasteful number, since it uses less digits than its factorization.

42905929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58295.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 42905929 is about 6550.2617504952. The cubic root of 42905929 is about 350.0841403152.

It can be divided in two parts, 42905 and 929, that added together give a palindrome (43834).

The spelling of 42905929 in words is "forty-two million, nine hundred five thousand, nine hundred twenty-nine".