121420106 has 8 divisors (see below), whose sum is σ = 186572484. Its totient is φ = 59229280.

The previous prime is 121420043. The next prime is 121420109. The reversal of 121420106 is 601024121.

It can be written as a sum of positive squares in 2 ways, for example, as 117180625 + 4239481 = 10825^2 + 2059^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121420109) 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, 740285 + ... + 740448.

Almost surely, 2^121420106 is an apocalyptic number.

121420106 is a deficient number, since it is larger than the sum of its proper divisors (65152378).

121420106 is a wasteful number, since it uses less digits than its factorization.

121420106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480776.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 121420106 is about 11019.0791811294. The cubic root of 121420106 is about 495.1805021410.

Adding to 121420106 its reverse (601024121), we get a palindrome (722444227).

The spelling of 121420106 in words is "one hundred twenty-one million, four hundred twenty thousand, one hundred six".