1290061140 has 48 divisors (see below), whose sum is σ = 3615131520. Its totient is φ = 343734400.

The previous prime is 1290061121. The next prime is 1290061147. The reversal of 1290061140 is 411600921.

It is a self number, because there is not a number n which added to its sum of digits gives 1290061140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290061147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70990 + ... + 87290.

It is an arithmetic number, because the mean of its divisors is an integer number (75315240).

Almost surely, 2^1290061140 is an apocalyptic number.

1290061140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290061140 is an abundant number, since it is smaller than the sum of its proper divisors (2325070380).

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

1290061140 is a wasteful number, since it uses less digits than its factorization.

1290061140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17632 (or 17630 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1290061140 is about 35917.4211212331. The cubic root of 1290061140 is about 1088.6044311718.

The spelling of 1290061140 in words is "one billion, two hundred ninety million, sixty-one thousand, one hundred forty".