1200131420 has 24 divisors (see below), whose sum is σ = 2543402400. Its totient is φ = 475647552.

The previous prime is 1200131411. The next prime is 1200131431. The reversal of 1200131420 is 241310021.

It is a junction number, because it is equal to n+sod(n) for n = 1200131395 and 1200131404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273080 + ... + 277439.

It is an arithmetic number, because the mean of its divisors is an integer number (105975100).

Almost surely, 2^1200131420 is an apocalyptic number.

1200131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200131420 is an abundant number, since it is smaller than the sum of its proper divisors (1343270980).

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

1200131420 is a wasteful number, since it uses less digits than its factorization.

1200131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550637 (or 550635 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1200131420 is about 34642.9129837547. The cubic root of 1200131420 is about 1062.6973607080.

Adding to 1200131420 its reverse (241310021), we get a palindrome (1441441441).

The spelling of 1200131420 in words is "one billion, two hundred million, one hundred thirty-one thousand, four hundred twenty".