42131433 has 4 divisors (see below), whose sum is σ = 56175248. Its totient is φ = 28087620.

The previous prime is 42131431. The next prime is 42131483. The reversal of 42131433 is 33413124.

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 not a de Polignac number, because 42131433 - 2¹ = 42131431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42131431) 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, 7021903 + ... + 7021908.

It is an arithmetic number, because the mean of its divisors is an integer number (14043812).

Almost surely, 2^42131433 is an apocalyptic number.

It is an amenable number.

42131433 is a deficient number, since it is larger than the sum of its proper divisors (14043815).

42131433 is a wasteful number, since it uses less digits than its factorization.

42131433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043814.

The product of its digits is 864, while the sum is 21.

The square root of 42131433 is about 6490.8730537579. The cubic root of 42131433 is about 347.9648778796.

Adding to 42131433 its reverse (33413124), we get a palindrome (75544557).

The spelling of 42131433 in words is "forty-two million, one hundred thirty-one thousand, four hundred thirty-three".