142720149 has 32 divisors (see below), whose sum is σ = 227816064. Its totient is φ = 78324480.

The previous prime is 142720147. The next prime is 142720159. The reversal of 142720149 is 941027241.

It is not a de Polignac number, because 142720149 - 2¹ = 142720147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142720147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19599 + ... + 25875.

It is an arithmetic number, because the mean of its divisors is an integer number (7119252).

Almost surely, 2^142720149 is an apocalyptic number.

It is an amenable number.

142720149 is a deficient number, since it is larger than the sum of its proper divisors (85095915).

142720149 is a wasteful number, since it uses less digits than its factorization.

142720149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 142720149 is about 11946.5538545641. The cubic root of 142720149 is about 522.5908043308.

The spelling of 142720149 in words is "one hundred forty-two million, seven hundred twenty thousand, one hundred forty-nine".