121422541 has 4 divisors (see below), whose sum is σ = 122378752. Its totient is φ = 120466332.

The previous prime is 121422529. The next prime is 121422547. The reversal of 121422541 is 145224121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145224121 = 7 ⋅20746303.

It is a cyclic number.

It is not a de Polignac number, because 121422541 - 2⁹ = 121422029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121422547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477915 + ... + 478168.

It is an arithmetic number, because the mean of its divisors is an integer number (30594688).

Almost surely, 2^121422541 is an apocalyptic number.

It is an amenable number.

121422541 is a deficient number, since it is larger than the sum of its proper divisors (956211).

121422541 is an equidigital number, since it uses as much as digits as its factorization.

121422541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956210.

The product of its digits is 640, while the sum is 22.

The square root of 121422541 is about 11019.1896707517. The cubic root of 121422541 is about 495.1838122915.

Adding to 121422541 its reverse (145224121), we get a palindrome (266646662).

The spelling of 121422541 in words is "one hundred twenty-one million, four hundred twenty-two thousand, five hundred forty-one".