121012342 has 24 divisors (see below), whose sum is σ = 201536496. Its totient is φ = 54450000.

The previous prime is 121012327. The next prime is 121012343. The reversal of 121012342 is 243210121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012343) 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 11 ways as a sum of consecutive naturals, for example, 21967 + ... + 26917.

It is an arithmetic number, because the mean of its divisors is an integer number (8397354).

Almost surely, 2^121012342 is an apocalyptic number.

121012342 is a deficient number, since it is larger than the sum of its proper divisors (80524154).

121012342 is a wasteful number, since it uses less digits than its factorization.

121012342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 5065 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121012342 is about 11000.5609856952. The cubic root of 121012342 is about 494.6255604504.

Adding to 121012342 its reverse (243210121), we get a palindrome (364222463).

The spelling of 121012342 in words is "one hundred twenty-one million, twelve thousand, three hundred forty-two".