121642463 has 4 divisors (see below), whose sum is σ = 128797920. Its totient is φ = 114487008.

The previous prime is 121642459. The next prime is 121642487. The reversal of 121642463 is 364246121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121642463 - 2² = 121642459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121641463) 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, 3577703 + ... + 3577736.

It is an arithmetic number, because the mean of its divisors is an integer number (32199480).

Almost surely, 2^121642463 is an apocalyptic number.

121642463 is a deficient number, since it is larger than the sum of its proper divisors (7155457).

121642463 is an equidigital number, since it uses as much as digits as its factorization.

121642463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155456.

The product of its digits is 6912, while the sum is 29.

The square root of 121642463 is about 11029.1642022413. The cubic root of 121642463 is about 495.4825929831.

Adding to 121642463 its reverse (364246121), we get a palindrome (485888584).

The spelling of 121642463 in words is "one hundred twenty-one million, six hundred forty-two thousand, four hundred sixty-three".