42590929 has 4 divisors (see below), whose sum is σ = 42826420. Its totient is φ = 42355440.

The previous prime is 42590927. The next prime is 42590957. The reversal of 42590929 is 92909524.

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 2560000 + 40030929 = 1600^2 + 6327^2 .

It is a cyclic number.

It is not a de Polignac number, because 42590929 - 2¹ = 42590927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42590891 and 42590900.

It is not an unprimeable number, because it can be changed into a prime (42590921) 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, 117474 + ... + 117835.

It is an arithmetic number, because the mean of its divisors is an integer number (10706605).

Almost surely, 2^42590929 is an apocalyptic number.

It is an amenable number.

42590929 is a deficient number, since it is larger than the sum of its proper divisors (235491).

42590929 is a wasteful number, since it uses less digits than its factorization.

42590929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235490.

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

The square root of 42590929 is about 6526.1726149406. The cubic root of 42590929 is about 349.2253042278.

The spelling of 42590929 in words is "forty-two million, five hundred ninety thousand, nine hundred twenty-nine".