40421948 has 36 divisors (see below), whose sum is σ = 84542640. Its totient is φ = 16564416.

The previous prime is 40421947. The next prime is 40421957. The reversal of 40421948 is 84912404.

It is a super-2 number, since 2×40421948² = 3267867760229408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421947) 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, 13448 + ... + 16176.

Almost surely, 2^40421948 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 40421948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42271320).

40421948 is an abundant number, since it is smaller than the sum of its proper divisors (44120692).

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

40421948 is a wasteful number, since it uses less digits than its factorization.

40421948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2761 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40421948 is about 6357.8257289737. The cubic root of 40421948 is about 343.1935204338.

The spelling of 40421948 in words is "forty million, four hundred twenty-one thousand, nine hundred forty-eight".