42404148 has 60 divisors (see below), whose sum is σ = 114700740. Its totient is φ = 13644288.

The previous prime is 42404147. The next prime is 42404189. The reversal of 42404148 is 84140424.

It is a happy number.

42404148 is a `hidden beast` number, since 4 + 240 + 414 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6906384 + 35497764 = 2628^2 + 5958^2 .

It is a super-2 number, since 2×42404148² = 3596223535211808, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7140 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (1911679).

Almost surely, 2^42404148 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 42404148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57350370).

42404148 is an abundant number, since it is smaller than the sum of its proper divisors (72296592).

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

42404148 is a wasteful number, since it uses less digits than its factorization.

42404148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558 (or 4547 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 42404148 is about 6511.8467426683. The cubic root of 42404148 is about 348.7140510986.

The spelling of 42404148 in words is "forty-two million, four hundred four thousand, one hundred forty-eight".