1202520400 has 30 divisors (see below), whose sum is σ = 2889056222. Its totient is φ = 481008000.

The previous prime is 1202520391. The next prime is 1202520419. The reversal of 1202520400 is 40252021.

It can be written as a sum of positive squares in 3 ways, for example, as 326597184 + 875923216 = 18072^2 + 29596^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1502751 + ... + 1503550.

Almost surely, 2^1202520400 is an apocalyptic number.

1202520400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202520400 is an abundant number, since it is smaller than the sum of its proper divisors (1686535822).

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

1202520400 is a wasteful number, since it uses less digits than its factorization.

1202520400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006319 (or 3006308 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1202520400 is about 34677.3759099503. The cubic root of 1202520400 is about 1063.4020279931.

Adding to 1202520400 its reverse (40252021), we get a palindrome (1242772421).

The spelling of 1202520400 in words is "one billion, two hundred two million, five hundred twenty thousand, four hundred".