142122071 has 24 divisors (see below), whose sum is σ = 185166720. Its totient is φ = 106513056.

The previous prime is 142122061. The next prime is 142122107. The reversal of 142122071 is 170221241.

142122071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142122071 - 2⁶ = 142122007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142122061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19316 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (7715280).

Almost surely, 2^142122071 is an apocalyptic number.

142122071 is a deficient number, since it is larger than the sum of its proper divisors (43044649).

142122071 is a wasteful number, since it uses less digits than its factorization.

142122071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375 (or 6362 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 142122071 is about 11921.4961728803. The cubic root of 142122071 is about 521.8597987660.

The spelling of 142122071 in words is "one hundred forty-two million, one hundred twenty-two thousand, seventy-one".