1520042422 has 4 divisors (see below), whose sum is σ = 2280063636. Its totient is φ = 760021210.

The previous prime is 1520042393. The next prime is 1520042441. The reversal of 1520042422 is 2242400251.

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

It is a super-3 number, since 3×1520042422³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1520042393 and 1520042402.

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, 380010604 + ... + 380010607.

It is an arithmetic number, because the mean of its divisors is an integer number (570015909).

Almost surely, 2^1520042422 is an apocalyptic number.

1520042422 is a deficient number, since it is larger than the sum of its proper divisors (760021214).

1520042422 is an equidigital number, since it uses as much as digits as its factorization.

1520042422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760021213.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1520042422 is about 38987.7214261106. The cubic root of 1520042422 is about 1149.7901121680.

Adding to 1520042422 its reverse (2242400251), we get a palindrome (3762442673).

The spelling of 1520042422 in words is "one billion, five hundred twenty million, forty-two thousand, four hundred twenty-two".