1520329842 has 24 divisors (see below), whose sum is σ = 3299626044. Its totient is φ = 505918464.

The previous prime is 1520329823. The next prime is 1520329849. The reversal of 1520329842 is 2489230251.

It is a happy number.

1520329842 is a `hidden beast` number, since 1 + 520 + 3 + 2 + 98 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1450924281 + 69405561 = 38091^2 + 8331^2 .

It is a super-2 number, since 2×1520329842² = 4622805656951489928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520329797 and 1520329806.

It is not an unprimeable number, because it can be changed into a prime (1520329849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60543 + ... + 81890.

Almost surely, 2^1520329842 is an apocalyptic number.

1520329842 is an abundant number, since it is smaller than the sum of its proper divisors (1779296202).

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

1520329842 is a wasteful number, since it uses less digits than its factorization.

1520329842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143034 (or 143031 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1520329842 is about 38991.4072841697. The cubic root of 1520329842 is about 1149.8625776559.

The spelling of 1520329842 in words is "one billion, five hundred twenty million, three hundred twenty-nine thousand, eight hundred forty-two".