121672646 has 4 divisors (see below), whose sum is σ = 182508972. Its totient is φ = 60836322.

The previous prime is 121672633. The next prime is 121672651. The reversal of 121672646 is 646276121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646276121 = 7829 ⋅82549.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30418160 + ... + 30418163.

It is an arithmetic number, because the mean of its divisors is an integer number (45627243).

Almost surely, 2^121672646 is an apocalyptic number.

121672646 is a deficient number, since it is larger than the sum of its proper divisors (60836326).

121672646 is an equidigital number, since it uses as much as digits as its factorization.

121672646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60836325.

The product of its digits is 24192, while the sum is 35.

The square root of 121672646 is about 11030.5324440845. The cubic root of 121672646 is about 495.5235707633.

The spelling of 121672646 in words is "one hundred twenty-one million, six hundred seventy-two thousand, six hundred forty-six".