1520404142042 has 8 divisors (see below), whose sum is σ = 2280835888032. Its totient is φ = 760125512700.

The previous prime is 1520404142021. The next prime is 1520404142069. The reversal of 1520404142042 is 2402414040251.

It is a happy number.

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

It is a super-2 number, since 2×1520404142042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520404141996 and 1520404142014.

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, 38254334 + ... + 38294057.

It is an arithmetic number, because the mean of its divisors is an integer number (285104486004).

Almost surely, 2^{1520404142042} is an apocalyptic number.

1520404142042 is a deficient number, since it is larger than the sum of its proper divisors (760431745990).

1520404142042 is an equidigital number, since it uses as much as digits as its factorization.

1520404142042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76558324.

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 1520404142042 its reverse (2402414040251), we get a palindrome (3922818182293).

The spelling of 1520404142042 in words is "one trillion, five hundred twenty billion, four hundred four million, one hundred forty-two thousand, forty-two".