1520420300 has 72 divisors (see below), whose sum is σ = 3779924736. Its totient is φ = 520004160.

The previous prime is 1520420269. The next prime is 1520420309. The reversal of 1520420300 is 30240251.

It is a super-3 number, since 3×1520420300³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520420309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307649 + ... + 312551.

Almost surely, 2^1520420300 is an apocalyptic number.

1520420300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520420300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889962368).

1520420300 is an abundant number, since it is smaller than the sum of its proper divisors (2259504436).

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

1520420300 is a wasteful number, since it uses less digits than its factorization.

1520420300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367 (or 5360 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1520420300 is about 38992.5672404370. The cubic root of 1520420300 is about 1149.8853824016.

Adding to 1520420300 its reverse (30240251), we get a palindrome (1550660551).

The spelling of 1520420300 in words is "one billion, five hundred twenty million, four hundred twenty thousand, three hundred".