42429855 has 32 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 20211840.

The previous prime is 42429853. The next prime is 42429883. The reversal of 42429855 is 55892424.

It is not a de Polignac number, because 42429855 - 2¹ = 42429853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42429853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2536 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^42429855 is an apocalyptic number.

42429855 is a deficient number, since it is larger than the sum of its proper divisors (33049185).

42429855 is a wasteful number, since it uses less digits than its factorization.

42429855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071.

The product of its digits is 115200, while the sum is 39.

The square root of 42429855 is about 6513.8203076229. The cubic root of 42429855 is about 348.7845047501.

The spelling of 42429855 in words is "forty-two million, four hundred twenty-nine thousand, eight hundred fifty-five".