121407871 has 8 divisors (see below), whose sum is σ = 131970384. Its totient is φ = 111020160.

The previous prime is 121407859. The next prime is 121407883. The reversal of 121407871 is 178704121.

It is an interprime number because it is at equal distance from previous prime (121407859) and next prime (121407883).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121407871 is a prime.

It is a super-2 number, since 2×121407871² = 29479742281505282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121407971) 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 7 ways as a sum of consecutive naturals, for example, 42250 + ... + 45031.

It is an arithmetic number, because the mean of its divisors is an integer number (16496298).

Almost surely, 2^121407871 is an apocalyptic number.

121407871 is a deficient number, since it is larger than the sum of its proper divisors (10562513).

121407871 is a wasteful number, since it uses less digits than its factorization.

121407871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87401.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 121407871 is about 11018.5239937117. The cubic root of 121407871 is about 495.1638691545.

The spelling of 121407871 in words is "one hundred twenty-one million, four hundred seven thousand, eight hundred seventy-one".