1290342084 has 12 divisors (see below), whose sum is σ = 3010798224. Its totient is φ = 430114024.

The previous prime is 1290342083. The next prime is 1290342091. The reversal of 1290342084 is 4802430921.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1290342083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53764242 + ... + 53764265.

It is an arithmetic number, because the mean of its divisors is an integer number (250899852).

Almost surely, 2^1290342084 is an apocalyptic number.

It is an amenable number.

1290342084 is an abundant number, since it is smaller than the sum of its proper divisors (1720456140).

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

1290342084 is a wasteful number, since it uses less digits than its factorization.

1290342084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107528514 (or 107528512 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1290342084 is about 35921.3318795392. The cubic root of 1290342084 is about 1088.6834493091.

The spelling of 1290342084 in words is "one billion, two hundred ninety million, three hundred forty-two thousand, eighty-four".