1520321413642 has 8 divisors (see below), whose sum is σ = 2280874850496. Its totient is φ = 760029796812.

The previous prime is 1520321413609. The next prime is 1520321413651. The reversal of 1520321413642 is 2463141230251.

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

It is a super-2 number, since 2×1520321413642² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520321413598 and 1520321413607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65440488 + ... + 65463715.

It is an arithmetic number, because the mean of its divisors is an integer number (285109356312).

Almost surely, 2^{1520321413642} is an apocalyptic number.

1520321413642 is a deficient number, since it is larger than the sum of its proper divisors (760553436854).

1520321413642 is a wasteful number, since it uses less digits than its factorization.

1520321413642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130910012.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 1520321413642 its reverse (2463141230251), we get a palindrome (3983462643893).

The spelling of 1520321413642 in words is "one trillion, five hundred twenty billion, three hundred twenty-one million, four hundred thirteen thousand, six hundred forty-two".