142444340 has 48 divisors (see below), whose sum is σ = 304746624. Its totient is φ = 55920000.

The previous prime is 142444331. The next prime is 142444363. The reversal of 142444340 is 43444241.

142444340 = T₁₅ + T₁₆ + ... + T₉₄₈.

It is a happy number.

142444340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304787 + ... + 305253.

It is an arithmetic number, because the mean of its divisors is an integer number (6348888).

Almost surely, 2^142444340 is an apocalyptic number.

142444340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142444340 is an abundant number, since it is smaller than the sum of its proper divisors (162302284).

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

142444340 is a wasteful number, since it uses less digits than its factorization.

142444340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 142444340 is about 11935.0048177619. The cubic root of 142444340 is about 522.2539488462.

Adding to 142444340 its reverse (43444241), we get a palindrome (185888581).

Subtracting from 142444340 its reverse (43444241), we obtain a palindrome (99000099).

The spelling of 142444340 in words is "one hundred forty-two million, four hundred forty-four thousand, three hundred forty".