121534867 has 4 divisors (see below), whose sum is σ = 123594840. Its totient is φ = 119474896.

The previous prime is 121534859. The next prime is 121534877. The reversal of 121534867 is 768435121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768435121 = 8693 ⋅88397.

It is a cyclic number.

It is not a de Polignac number, because 121534867 - 2³ = 121534859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121534807) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1029898 + ... + 1030015.

It is an arithmetic number, because the mean of its divisors is an integer number (30898710).

Almost surely, 2^121534867 is an apocalyptic number.

121534867 is a deficient number, since it is larger than the sum of its proper divisors (2059973).

121534867 is an equidigital number, since it uses as much as digits as its factorization.

121534867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059972.

The product of its digits is 40320, while the sum is 37.

The square root of 121534867 is about 11024.2853283104. The cubic root of 121534867 is about 495.3364607030.

Adding to 121534867 its reverse (768435121), we get a palindrome (889969988).

It can be divided in two parts, 12153 and 4867, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 121534867 in words is "one hundred twenty-one million, five hundred thirty-four thousand, eight hundred sixty-seven".