1321900134 has 24 divisors (see below), whose sum is σ = 2687897160. Its totient is φ = 433402560.

The previous prime is 1321900121. The next prime is 1321900187. The reversal of 1321900134 is 4310091231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7279 + ... + 51930.

It is an arithmetic number, because the mean of its divisors is an integer number (111995715).

Almost surely, 2^1321900134 is an apocalyptic number.

1321900134 is an abundant number, since it is smaller than the sum of its proper divisors (1365997026).

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

1321900134 is an equidigital number, since it uses as much as digits as its factorization.

1321900134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59336 (or 59275 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1321900134 is about 36357.9445788675. The cubic root of 1321900134 is about 1097.4874150656.

Adding to 1321900134 its reverse (4310091231), we get a palindrome (5631991365).

The spelling of 1321900134 in words is "one billion, three hundred twenty-one million, nine hundred thousand, one hundred thirty-four".