42599898 has 64 divisors (see below), whose sum is σ = 106876800. Its totient is φ = 12458880.

The previous prime is 42599897. The next prime is 42599903. The reversal of 42599898 is 89899524.

42599898 is a `hidden beast` number, since 42 + 599 + 8 + 9 + 8 = 666.

It is a super-2 number, since 2×42599898² = 3629502619220808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (42599897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15990 + ... + 18462.

It is an arithmetic number, because the mean of its divisors is an integer number (1669950).

Almost surely, 2^42599898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42599898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53438400).

42599898 is an abundant number, since it is smaller than the sum of its proper divisors (64276902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42599898 is a wasteful number, since it uses less digits than its factorization.

42599898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524 (or 2518 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 42599898 is about 6526.8597349721. The cubic root of 42599898 is about 349.2498163480.

42599898 divided by its sum of digits (54) gives a palindrome (788887).

The spelling of 42599898 in words is "forty-two million, five hundred ninety-nine thousand, eight hundred ninety-eight".