142203771 has 24 divisors (see below), whose sum is σ = 216749520. Its totient is φ = 89591616.

The previous prime is 142203739. The next prime is 142203829. The reversal of 142203771 is 177302241.

It is a happy number.

It is not a de Polignac number, because 142203771 - 2⁵ = 142203739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142203731) 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, 94501 + ... + 95993.

It is an arithmetic number, because the mean of its divisors is an integer number (9031230).

Almost surely, 2^142203771 is an apocalyptic number.

142203771 is a deficient number, since it is larger than the sum of its proper divisors (74545749).

142203771 is a wasteful number, since it uses less digits than its factorization.

142203771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075 (or 2072 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 142203771 is about 11924.9222638976. The cubic root of 142203771 is about 521.9597780256.

The spelling of 142203771 in words is "one hundred forty-two million, two hundred three thousand, seven hundred seventy-one".