142780513 has 8 divisors (see below), whose sum is σ = 147524096. Its totient is φ = 138045600.

The previous prime is 142780507. The next prime is 142780523. The reversal of 142780513 is 315087241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142780513 is a prime.

It is a super-3 number, since 3×142780513³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142780523) 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, 60628 + ... + 62938.

It is an arithmetic number, because the mean of its divisors is an integer number (18440512).

Almost surely, 2^142780513 is an apocalyptic number.

It is an amenable number.

142780513 is a deficient number, since it is larger than the sum of its proper divisors (4743583).

142780513 is a wasteful number, since it uses less digits than its factorization.

142780513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 142780513 is about 11949.0800064273. The cubic root of 142780513 is about 522.6644711656.

The spelling of 142780513 in words is "one hundred forty-two million, seven hundred eighty thousand, five hundred thirteen".