1520200242 has 192 divisors, whose sum is σ = 3914127360. Its totient is φ = 421948800.

The previous prime is 1520200237. The next prime is 1520200247. The reversal of 1520200242 is 2420020251.

It is an interprime number because it is at equal distance from previous prime (1520200237) and next prime (1520200247).

It is a super-2 number, since 2×1520200242² = 4622017551553717128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1520200247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11604517 + ... + 11604647.

It is an arithmetic number, because the mean of its divisors is an integer number (20386080).

Almost surely, 2^1520200242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520200242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957063680).

1520200242 is an abundant number, since it is smaller than the sum of its proper divisors (2393927118).

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

1520200242 is a wasteful number, since it uses less digits than its factorization.

1520200242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1520200242 is about 38989.7453441286. The cubic root of 1520200242 is about 1149.8299035127.

Adding to 1520200242 its reverse (2420020251), we get a palindrome (3940220493).

Subtracting 1520200242 from its reverse (2420020251), we obtain a square (899820009 = 29997²).

The spelling of 1520200242 in words is "one billion, five hundred twenty million, two hundred thousand, two hundred forty-two".