1292117040 has 240 divisors, whose sum is σ = 4726706400. Its totient is φ = 315076608.

The previous prime is 1292117033. The next prime is 1292117053. The reversal of 1292117040 is 407112921.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 1292116995 and 1292117013.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 395092 + ... + 398348.

It is an arithmetic number, because the mean of its divisors is an integer number (19694610).

Almost surely, 2^1292117040 is an apocalyptic number.

1292117040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1292117040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363353200).

1292117040 is an abundant number, since it is smaller than the sum of its proper divisors (3434589360).

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

1292117040 is a wasteful number, since it uses less digits than its factorization.

1292117040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1292117040 is about 35946.0295443043. The cubic root of 1292117040 is about 1089.1824073984.

Adding to 1292117040 its reverse (407112921), we get a palindrome (1699229961).

The spelling of 1292117040 in words is "one billion, two hundred ninety-two million, one hundred seventeen thousand, forty".