121738497 has 4 divisors (see below), whose sum is σ = 162318000. Its totient is φ = 81158996.

The previous prime is 121738483. The next prime is 121738537. The reversal of 121738497 is 794837121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121738497 - 2⁷ = 121738369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121738597) 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, 20289747 + ... + 20289752.

It is an arithmetic number, because the mean of its divisors is an integer number (40579500).

Almost surely, 2^121738497 is an apocalyptic number.

It is an amenable number.

121738497 is a deficient number, since it is larger than the sum of its proper divisors (40579503).

121738497 is an equidigital number, since it uses as much as digits as its factorization.

121738497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40579502.

The product of its digits is 84672, while the sum is 42.

The square root of 121738497 is about 11033.5169823588. The cubic root of 121738497 is about 495.6129494877.

The spelling of 121738497 in words is "one hundred twenty-one million, seven hundred thirty-eight thousand, four hundred ninety-seven".