42031155 has 8 divisors (see below), whose sum is σ = 67249872. Its totient is φ = 22416608.

The previous prime is 42031153. The next prime is 42031159. The reversal of 42031155 is 55113024.

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

It is a cyclic number.

It is not a de Polignac number, because 42031155 - 2¹ = 42031153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42031153) 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, 1401024 + ... + 1401053.

It is an arithmetic number, because the mean of its divisors is an integer number (8406234).

Almost surely, 2^42031155 is an apocalyptic number.

42031155 is a deficient number, since it is larger than the sum of its proper divisors (25218717).

42031155 is a wasteful number, since it uses less digits than its factorization.

42031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802085.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 42031155 is about 6483.1439132569. The cubic root of 42031155 is about 347.6885921424.

Adding to 42031155 its reverse (55113024), we get a palindrome (97144179).

The spelling of 42031155 in words is "forty-two million, thirty-one thousand, one hundred fifty-five".