142748220 has 48 divisors (see below), whose sum is σ = 410503968. Its totient is φ = 37036800.

The previous prime is 142748191. The next prime is 142748233. The reversal of 142748220 is 22847241.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 29931 + ... + 34370.

It is an arithmetic number, because the mean of its divisors is an integer number (8552166).

Almost surely, 2^142748220 is an apocalyptic number.

142748220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142748220 is an abundant number, since it is smaller than the sum of its proper divisors (267755748).

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

142748220 is a wasteful number, since it uses less digits than its factorization.

142748220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64350 (or 64348 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 142748220 is about 11947.7286544347. The cubic root of 142748220 is about 522.6250641157.

The spelling of 142748220 in words is "one hundred forty-two million, seven hundred forty-eight thousand, two hundred twenty".