40421146 has 4 divisors (see below), whose sum is σ = 60631722. Its totient is φ = 20210572.

The previous prime is 40421141. The next prime is 40421153. The reversal of 40421146 is 64112404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 1221025 = 6261^2 + 1105^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40421141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105285 + ... + 10105288.

Almost surely, 2^40421146 is an apocalyptic number.

40421146 is a deficient number, since it is larger than the sum of its proper divisors (20210576).

40421146 is a wasteful number, since it uses less digits than its factorization.

40421146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20210575.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 40421146 is about 6357.7626567842. The cubic root of 40421146 is about 343.1912506848.

The spelling of 40421146 in words is "forty million, four hundred twenty-one thousand, one hundred forty-six".