142552740 has 96 divisors (see below), whose sum is σ = 445648896. Its totient is φ = 33747840.

The previous prime is 142552727. The next prime is 142552741. The reversal of 142552740 is 47255241.

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

It is a junction number, because it is equal to n+sod(n) for n = 142552698 and 142552707.

It is not an unprimeable number, because it can be changed into a prime (142552741) 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, 25869 + ... + 30891.

It is an arithmetic number, because the mean of its divisors is an integer number (4642176).

Almost surely, 2^142552740 is an apocalyptic number.

142552740 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 142552740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222824448).

142552740 is an abundant number, since it is smaller than the sum of its proper divisors (303096156).

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

142552740 is a wasteful number, since it uses less digits than its factorization.

142552740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089 (or 5087 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 142552740 is about 11939.5452174695. The cubic root of 142552740 is about 522.3863934991.

The spelling of 142552740 in words is "one hundred forty-two million, five hundred fifty-two thousand, seven hundred forty".