42154155 has 16 divisors (see below), whose sum is σ = 74940960. Its totient is φ = 22482144.

The previous prime is 42154153. The next prime is 42154181. The reversal of 42154155 is 55145124.

It is not a de Polignac number, because 42154155 - 2¹ = 42154153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42154153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155992 + ... + 156261.

It is an arithmetic number, because the mean of its divisors is an integer number (4683810).

Almost surely, 2^42154155 is an apocalyptic number.

42154155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42154155 is a deficient number, since it is larger than the sum of its proper divisors (32786805).

42154155 is a wasteful number, since it uses less digits than its factorization.

42154155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312267 (or 312261 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 42154155 is about 6492.6231216666. The cubic root of 42154155 is about 348.0274205504.

Adding to 42154155 its reverse (55145124), we get a palindrome (97299279).

The spelling of 42154155 in words is "forty-two million, one hundred fifty-four thousand, one hundred fifty-five".