440423142 has 8 divisors (see below), whose sum is σ = 880846296. Its totient is φ = 146807712.

The previous prime is 440423117. The next prime is 440423161. The reversal of 440423142 is 241324044.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

440423142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36701923 + ... + 36701934.

It is an arithmetic number, because the mean of its divisors is an integer number (110105787).

Almost surely, 2^440423142 is an apocalyptic number.

440423142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

440423142 is a wasteful number, since it uses less digits than its factorization.

440423142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73403862.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440423142 is about 20986.2607912891. The cubic root of 440423142 is about 760.8342305372.

Adding to 440423142 its reverse (241324044), we get a palindrome (681747186).

The spelling of 440423142 in words is "four hundred forty million, four hundred twenty-three thousand, one hundred forty-two".