1290066451 has 4 divisors (see below), whose sum is σ = 1302591472. Its totient is φ = 1277541432.

The previous prime is 1290066433. The next prime is 1290066467. The reversal of 1290066451 is 1546600921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1546600921 = 313 ⋅4941217.

It is a cyclic number.

It is not a de Polignac number, because 1290066451 - 2⁵ = 1290066419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290066751) 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, 6262356 + ... + 6262561.

It is an arithmetic number, because the mean of its divisors is an integer number (325647868).

Almost surely, 2^1290066451 is an apocalyptic number.

1290066451 is a deficient number, since it is larger than the sum of its proper divisors (12525021).

1290066451 is a wasteful number, since it uses less digits than its factorization.

1290066451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525020.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1290066451 is about 35917.4950546388. The cubic root of 1290066451 is about 1088.6059250468.

The spelling of 1290066451 in words is "one billion, two hundred ninety million, sixty-six thousand, four hundred fifty-one".