42131155 has 8 divisors (see below), whose sum is σ = 55153584. Its totient is φ = 30640800.

The previous prime is 42131153. The next prime is 42131161. The reversal of 42131155 is 55113124.

It is a happy number.

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

It is not a de Polignac number, because 42131155 - 2¹ = 42131153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42131153) 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, 382956 + ... + 383065.

It is an arithmetic number, because the mean of its divisors is an integer number (6894198).

Almost surely, 2^42131155 is an apocalyptic number.

42131155 is a deficient number, since it is larger than the sum of its proper divisors (13022429).

42131155 is a wasteful number, since it uses less digits than its factorization.

42131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766037.

The product of its digits is 600, while the sum is 22.

The square root of 42131155 is about 6490.8516390378. The cubic root of 42131155 is about 347.9641125409.

Adding to 42131155 its reverse (55113124), we get a palindrome (97244279).

The spelling of 42131155 in words is "forty-two million, one hundred thirty-one thousand, one hundred fifty-five".