440453142 has 12 divisors (see below), whose sum is σ = 954315180. Its totient is φ = 146817708.

The previous prime is 440453137. The next prime is 440453149. The reversal of 440453142 is 241354044.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440453149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12234792 + ... + 12234827.

It is an arithmetic number, because the mean of its divisors is an integer number (79526265).

Almost surely, 2^440453142 is an apocalyptic number.

440453142 is an abundant number, since it is smaller than the sum of its proper divisors (513862038).

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

440453142 is a wasteful number, since it uses less digits than its factorization.

440453142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24469627 (or 24469624 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 440453142 is about 20986.9755324582. The cubic root of 440453142 is about 760.8515052188.

The spelling of 440453142 in words is "four hundred forty million, four hundred fifty-three thousand, one hundred forty-two".