142031442 has 16 divisors (see below), whose sum is σ = 324643392. Its totient is φ = 40580400.

The previous prime is 142031437. The next prime is 142031459. The reversal of 142031442 is 244130241.

142031442 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 1690809 + ... + 1690892.

It is an arithmetic number, because the mean of its divisors is an integer number (20290212).

Almost surely, 2^142031442 is an apocalyptic number.

142031442 is an abundant number, since it is smaller than the sum of its proper divisors (182611950).

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

142031442 is a wasteful number, since it uses less digits than its factorization.

142031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381713.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142031442 is about 11917.6944918050. The cubic root of 142031442 is about 521.7488479283.

Adding to 142031442 its reverse (244130241), we get a palindrome (386161683).

The spelling of 142031442 in words is "one hundred forty-two million, thirty-one thousand, four hundred forty-two".