121262539 has 2 divisors, whose sum is σ = 121262540. Its totient is φ = 121262538.

The previous prime is 121262527. The next prime is 121262573. The reversal of 121262539 is 935262121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121262539 - 2¹⁹ = 120738251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121262539.

It is not a weakly prime, because it can be changed into another prime (121260539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60631269 + 60631270.

It is an arithmetic number, because the mean of its divisors is an integer number (60631270).

Almost surely, 2^121262539 is an apocalyptic number.

121262539 is a deficient number, since it is larger than the sum of its proper divisors (1).

121262539 is an equidigital number, since it uses as much as digits as its factorization.

121262539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 121262539 is about 11011.9271247135. The cubic root of 121262539 is about 494.9662106650.

It can be divided in two parts, 121262 and 539, that added together give a square (121801 = 349²).

The spelling of 121262539 in words is "one hundred twenty-one million, two hundred sixty-two thousand, five hundred thirty-nine".