121820746 has 16 divisors (see below), whose sum is σ = 185279328. Its totient is φ = 60066000.

The previous prime is 121820711. The next prime is 121820747. The reversal of 121820746 is 647028121.

It is not an unprimeable number, because it can be changed into a prime (121820747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56101 + ... + 58231.

It is an arithmetic number, because the mean of its divisors is an integer number (11579958).

Almost surely, 2^121820746 is an apocalyptic number.

121820746 is a deficient number, since it is larger than the sum of its proper divisors (63458582).

121820746 is a wasteful number, since it uses less digits than its factorization.

121820746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 121820746 is about 11037.2435870556. The cubic root of 121820746 is about 495.7245397507.

Adding to 121820746 its reverse (647028121), we get a palindrome (768848867).

The spelling of 121820746 in words is "one hundred twenty-one million, eight hundred twenty thousand, seven hundred forty-six".