142545920 has 88 divisors (see below), whose sum is σ = 373176288. Its totient is φ = 51814400.

The previous prime is 142545899. The next prime is 142545929. The reversal of 142545920 is 29545241.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142545929) 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, 55055 + ... + 57585.

Almost surely, 2^142545920 is an apocalyptic number.

142545920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142545920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186588144).

142545920 is an abundant number, since it is smaller than the sum of its proper divisors (230630368).

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

142545920 is a wasteful number, since it uses less digits than its factorization.

142545920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 142545920 is about 11939.2596085352. The cubic root of 142545920 is about 522.3780627063.

The spelling of 142545920 in words is "one hundred forty-two million, five hundred forty-five thousand, nine hundred twenty".