40421052 has 96 divisors (see below), whose sum is σ = 120995840. Its totient is φ = 11430720.

The previous prime is 40421047. The next prime is 40421071. The reversal of 40421052 is 25012404.

40421052 is a `hidden beast` number, since 404 + 210 + 52 = 666.

40421052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40421052² = 3267722889573408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 95802 + ... + 96222.

Almost surely, 2^40421052 is an apocalyptic number.

40421052 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40421052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60497920).

40421052 is an abundant number, since it is smaller than the sum of its proper divisors (80574788).

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

40421052 is a wasteful number, since it uses less digits than its factorization.

40421052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40421052 is about 6357.7552642422. The cubic root of 40421052 is about 343.1909846524.

Adding to 40421052 its reverse (25012404), we get a palindrome (65433456).

The spelling of 40421052 in words is "forty million, four hundred twenty-one thousand, fifty-two".