121420606 has 8 divisors (see below), whose sum is σ = 187053480. Its totient is φ = 59069448.

The previous prime is 121420603. The next prime is 121420661. The reversal of 121420606 is 606024121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121420606² = 29485927122814472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420603) 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, 820336 + ... + 820483.

It is an arithmetic number, because the mean of its divisors is an integer number (23381685).

Almost surely, 2^121420606 is an apocalyptic number.

121420606 is a deficient number, since it is larger than the sum of its proper divisors (65632874).

121420606 is a wasteful number, since it uses less digits than its factorization.

121420606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640858.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 121420606 is about 11019.1018690273. The cubic root of 121420606 is about 495.1811818470.

Adding to 121420606 its reverse (606024121), we get a palindrome (727444727).

The spelling of 121420606 in words is "one hundred twenty-one million, four hundred twenty thousand, six hundred six".