1442400142 has 4 divisors (see below), whose sum is σ = 2163600216. Its totient is φ = 721200070.

The previous prime is 1442400121. The next prime is 1442400149. The reversal of 1442400142 is 2410042441.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442400149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360600034 + ... + 360600037.

It is an arithmetic number, because the mean of its divisors is an integer number (540900054).

Almost surely, 2^1442400142 is an apocalyptic number.

1442400142 is a deficient number, since it is larger than the sum of its proper divisors (721200074).

1442400142 is an equidigital number, since it uses as much as digits as its factorization.

1442400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721200073.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1442400142 is about 37978.9434028910. The cubic root of 1442400142 is about 1129.8702808778.

Adding to 1442400142 its reverse (2410042441), we get a palindrome (3852442583).

The spelling of 1442400142 in words is "one billion, four hundred forty-two million, four hundred thousand, one hundred forty-two".