1520516140342 has 4 divisors (see below), whose sum is σ = 2280774210516. Its totient is φ = 760258070170.

The previous prime is 1520516140337. The next prime is 1520516140387. The reversal of 1520516140342 is 2430416150251.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1520516140298 and 1520516140307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380129035084 + ... + 380129035087.

It is an arithmetic number, because the mean of its divisors is an integer number (570193552629).

Almost surely, 2^{1520516140342} is an apocalyptic number.

1520516140342 is a deficient number, since it is larger than the sum of its proper divisors (760258070174).

1520516140342 is an equidigital number, since it uses as much as digits as its factorization.

1520516140342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760258070173.

The product of its (nonzero) digits is 28800, while the sum is 34.

Subtracting 1520516140342 from its reverse (2430416150251), we obtain a palindrome (909900009909).

The spelling of 1520516140342 in words is "one trillion, five hundred twenty billion, five hundred sixteen million, one hundred forty thousand, three hundred forty-two".