142155445 has 16 divisors (see below), whose sum is σ = 181336320. Its totient is φ = 106610944.

The previous prime is 142155427. The next prime is 142155457. The reversal of 142155445 is 544551241.

It is a happy number.

It is not a de Polignac number, because 142155445 - 2⁵ = 142155413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19176 + ... + 25534.

It is an arithmetic number, because the mean of its divisors is an integer number (11333520).

Almost surely, 2^142155445 is an apocalyptic number.

It is an amenable number.

142155445 is a deficient number, since it is larger than the sum of its proper divisors (39180875).

142155445 is a wasteful number, since it uses less digits than its factorization.

142155445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644.

The product of its digits is 16000, while the sum is 31.

The square root of 142155445 is about 11922.8958311310. The cubic root of 142155445 is about 521.9006443707.

The spelling of 142155445 in words is "one hundred forty-two million, one hundred fifty-five thousand, four hundred forty-five".