142152140 has 24 divisors (see below), whose sum is σ = 321483120. Its totient is φ = 52486848.

The previous prime is 142152139. The next prime is 142152149. The reversal of 142152140 is 41251241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (142152149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273110 + ... + 273629.

It is an arithmetic number, because the mean of its divisors is an integer number (13395130).

Almost surely, 2^142152140 is an apocalyptic number.

142152140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142152140 is an abundant number, since it is smaller than the sum of its proper divisors (179330980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142152140 is a wasteful number, since it uses less digits than its factorization.

142152140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546761 (or 546759 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 142152140 is about 11922.7572314461. The cubic root of 142152140 is about 521.8965997490.

The spelling of 142152140 in words is "one hundred forty-two million, one hundred fifty-two thousand, one hundred forty".