121005542 has 32 divisors (see below), whose sum is σ = 213276672. Its totient is φ = 50415264.

The previous prime is 121005539. The next prime is 121005581. The reversal of 121005542 is 245500121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113303 + ... + 114365.

It is an arithmetic number, because the mean of its divisors is an integer number (6664896).

Almost surely, 2^121005542 is an apocalyptic number.

121005542 is a deficient number, since it is larger than the sum of its proper divisors (92271130).

121005542 is a wasteful number, since it uses less digits than its factorization.

121005542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 121005542 is about 11000.2519062065. The cubic root of 121005542 is about 494.6162955089.

Adding to 121005542 its reverse (245500121), we get a palindrome (366505663).

The spelling of 121005542 in words is "one hundred twenty-one million, five thousand, five hundred forty-two".