121004542 has 4 divisors (see below), whose sum is σ = 181506816. Its totient is φ = 60502270.

The previous prime is 121004447. The next prime is 121004551. The reversal of 121004542 is 245400121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 30251134 + ... + 30251137.

It is an arithmetic number, because the mean of its divisors is an integer number (45376704).

Almost surely, 2^121004542 is an apocalyptic number.

121004542 is a deficient number, since it is larger than the sum of its proper divisors (60502274).

121004542 is an equidigital number, since it uses as much as digits as its factorization.

121004542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60502273.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 121004542 is about 11000.2064526081. The cubic root of 121004542 is about 494.6149329883.

Adding to 121004542 its reverse (245400121), we get a palindrome (366404663).

The spelling of 121004542 in words is "one hundred twenty-one million, four thousand, five hundred forty-two".