42130433 has 4 divisors (see below), whose sum is σ = 42547668. Its totient is φ = 41713200.

The previous prime is 42130427. The next prime is 42130441. The reversal of 42130433 is 33403124.

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 29506624 + 12623809 = 5432^2 + 3553^2 .

It is a cyclic number.

It is not a de Polignac number, because 42130433 - 2²⁴ = 25353217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42130423) 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, 208466 + ... + 208667.

It is an arithmetic number, because the mean of its divisors is an integer number (10636917).

Almost surely, 2^42130433 is an apocalyptic number.

It is an amenable number.

42130433 is a deficient number, since it is larger than the sum of its proper divisors (417235).

42130433 is a wasteful number, since it uses less digits than its factorization.

42130433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417234.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 42130433 is about 6490.7960220608. The cubic root of 42130433 is about 347.9621248470.

Adding to 42130433 its reverse (33403124), we get a palindrome (75533557).

The spelling of 42130433 in words is "forty-two million, one hundred thirty thousand, four hundred thirty-three".