42154992 has 100 divisors (see below), whose sum is σ = 133145496. Its totient is φ = 12769920.

The previous prime is 42154991. The next prime is 42155027. The reversal of 42154992 is 29945124.

42154992 is a `hidden beast` number, since 4 + 21 + 549 + 92 = 666.

42154992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12778 + ... + 15734.

Almost surely, 2^42154992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42154992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66572748).

42154992 is an abundant number, since it is smaller than the sum of its proper divisors (90990504).

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

42154992 is a wasteful number, since it uses less digits than its factorization.

42154992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 2973 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 42154992 is about 6492.6875791154. The cubic root of 42154992 is about 348.0297239771.

The spelling of 42154992 in words is "forty-two million, one hundred fifty-four thousand, nine hundred ninety-two".