516142380 has 48 divisors (see below), whose sum is σ = 1556370144. Its totient is φ = 127050240.

The previous prime is 516142369. The next prime is 516142439. The reversal of 516142380 is 83241615.

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

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, 330081 + ... + 331640.

It is an arithmetic number, because the mean of its divisors is an integer number (32424378).

Almost surely, 2^516142380 is an apocalyptic number.

It is an amenable number.

516142380 is an abundant number, since it is smaller than the sum of its proper divisors (1040227764).

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

516142380 is a wasteful number, since it uses less digits than its factorization.

516142380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661746 (or 661744 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 516142380 is about 22718.7671320431. The cubic root of 516142380 is about 802.1516971441.

Adding to 516142380 its reverse (83241615), we get a palindrome (599383995).

The spelling of 516142380 in words is "five hundred sixteen million, one hundred forty-two thousand, three hundred eighty".