444231140142 has 16 divisors (see below), whose sum is σ = 907365733632. Its totient is φ = 144926471160.

The previous prime is 444231140117. The next prime is 444231140167. The reversal of 444231140142 is 241041132444.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (444231140117) and next prime (444231140167).

It is a super-2 number, since 2×444231140142² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787643584 + ... + 787644147.

It is an arithmetic number, because the mean of its divisors is an integer number (56710358352).

Almost surely, 2^444231140142 is an apocalyptic number.

444231140142 is an abundant number, since it is smaller than the sum of its proper divisors (463134593490).

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

444231140142 is a wasteful number, since it uses less digits than its factorization.

444231140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575287783.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 444231140142 its reverse (241041132444), we get a palindrome (685272272586).

The spelling of 444231140142 in words is "four hundred forty-four billion, two hundred thirty-one million, one hundred forty thousand, one hundred forty-two".