142781760 has 168 divisors, whose sum is σ = 535874976. Its totient is φ = 34606080.

The previous prime is 142781741. The next prime is 142781767. The reversal of 142781760 is 67187241.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142781767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29427 + ... + 33933.

It is an arithmetic number, because the mean of its divisors is an integer number (3189732).

Almost surely, 2^142781760 is an apocalyptic number.

142781760 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 142781760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267937488).

142781760 is an abundant number, since it is smaller than the sum of its proper divisors (393093216).

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

142781760 is a wasteful number, since it uses less digits than its factorization.

142781760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 142781760 is about 11949.1321860627. The cubic root of 142781760 is about 522.6659927568.

The spelling of 142781760 in words is "one hundred forty-two million, seven hundred eighty-one thousand, seven hundred sixty".