1520243042 has 8 divisors (see below), whose sum is σ = 2280747456. Its totient is φ = 759993892.

The previous prime is 1520242993. The next prime is 1520243077. The reversal of 1520243042 is 2403420251.

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 2×1520243042² = 4622277813498827528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520242999 and 1520243017.

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, 48158 + ... + 73209.

It is an arithmetic number, because the mean of its divisors is an integer number (285093432).

Almost surely, 2^1520243042 is an apocalyptic number.

1520243042 is a deficient number, since it is larger than the sum of its proper divisors (760504414).

1520243042 is a wasteful number, since it uses less digits than its factorization.

1520243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127632.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1520243042 is about 38990.2942025320. The cubic root of 1520243042 is about 1149.8406942530.

Adding to 1520243042 its reverse (2403420251), we get a palindrome (3923663293).

The spelling of 1520243042 in words is "one billion, five hundred twenty million, two hundred forty-three thousand, forty-two".