1520066402 has 8 divisors (see below), whose sum is σ = 2284580700. Its totient is φ = 758539504.

The previous prime is 1520066393. The next prime is 1520066411. The reversal of 1520066402 is 2046600251.

It is an interprime number because it is at equal distance from previous prime (1520066393) and next prime (1520066411).

It can be written as a sum of positive squares in 2 ways, for example, as 1206103441 + 313962961 = 34729^2 + 17719^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745577 + ... + 747612.

Almost surely, 2^1520066402 is an apocalyptic number.

1520066402 is a deficient number, since it is larger than the sum of its proper divisors (764514298).

1520066402 is a wasteful number, since it uses less digits than its factorization.

1520066402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493700.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1520066402 is about 38988.0289576172. The cubic root of 1520066402 is about 1149.7961584515.

Adding to 1520066402 its reverse (2046600251), we get a palindrome (3566666653).

The spelling of 1520066402 in words is "one billion, five hundred twenty million, sixty-six thousand, four hundred two".