42123492 has 36 divisors (see below), whose sum is σ = 107207100.
Its totient is φ = 13945152.
The previous prime is 42123481. The next prime is 42123493. The reversal of 42123492 is 29432124.
42123492 is a `hidden beast` number, since 421 + 234 + 9 + 2 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 2509056 + 39614436 = 1584^2 + 6294^2
It is a tau number, because it is divible by the number of its divisors (36).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (42123493) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1438 + ... + 9290.
It is an arithmetic number, because the mean of its divisors is an integer number (2977975).
Almost surely, 242123492 is an apocalyptic number.
It is an amenable number.
42123492 is an abundant number, since it is smaller than the sum of its proper divisors (65083608).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
42123492 is a wasteful number, since it uses less digits than its factorization.
42123492 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8012 (or 8007 counting only the distinct ones).
The product of its digits is 3456, while the sum is 27.
The square root of 42123492 is about 6490.2613198545.
The cubic root of 42123492 is about 347.9430148467.
The spelling of 42123492 in words is "forty-two million, one hundred twenty-three thousand, four hundred ninety-two".