130421661 has 16 divisors (see below), whose sum is σ = 183131520. Its totient is φ = 82399680.

The previous prime is 130421657. The next prime is 130421677. The reversal of 130421661 is 166124031.

It is not a de Polignac number, because 130421661 - 2² = 130421657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130421651) 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, 1150 + ... + 16191.

It is an arithmetic number, because the mean of its divisors is an integer number (11445720).

Almost surely, 2^130421661 is an apocalyptic number.

It is an amenable number.

130421661 is a deficient number, since it is larger than the sum of its proper divisors (52709859).

130421661 is a wasteful number, since it uses less digits than its factorization.

130421661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17476.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 130421661 is about 11420.2303391832. The cubic root of 130421661 is about 507.1268156874.

Adding to 130421661 its reverse (166124031), we get a palindrome (296545692).

The spelling of 130421661 in words is "one hundred thirty million, four hundred twenty-one thousand, six hundred sixty-one".