121614638 has 4 divisors (see below), whose sum is σ = 182421960. Its totient is φ = 60807318.

The previous prime is 121614637. The next prime is 121614659. The reversal of 121614638 is 836416121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836416121 = 367 ⋅2279063.

It is a super-3 number, since 3×121614638³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121614637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30403658 + ... + 30403661.

It is an arithmetic number, because the mean of its divisors is an integer number (45605490).

Almost surely, 2^121614638 is an apocalyptic number.

121614638 is a deficient number, since it is larger than the sum of its proper divisors (60807322).

121614638 is an equidigital number, since it uses as much as digits as its factorization.

121614638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60807321.

The product of its digits is 6912, while the sum is 32.

The square root of 121614638 is about 11027.9027017833. The cubic root of 121614638 is about 495.4448105231. Note that the first 3 decimals are identical.

The spelling of 121614638 in words is "one hundred twenty-one million, six hundred fourteen thousand, six hundred thirty-eight".