142071422 has 4 divisors (see below), whose sum is σ = 213107136. Its totient is φ = 71035710.

The previous prime is 142071421. The next prime is 142071439. The reversal of 142071422 is 224170241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142071421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35517854 + ... + 35517857.

It is an arithmetic number, because the mean of its divisors is an integer number (53276784).

Almost surely, 2^142071422 is an apocalyptic number.

142071422 is a deficient number, since it is larger than the sum of its proper divisors (71035714).

142071422 is an equidigital number, since it uses as much as digits as its factorization.

142071422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71035713.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 142071422 is about 11919.3717116298. The cubic root of 142071422 is about 521.7977985027.

The spelling of 142071422 in words is "one hundred forty-two million, seventy-one thousand, four hundred twenty-two".