121142079 has 12 divisors (see below), whose sum is σ = 180628032. Its totient is φ = 78156000.

The previous prime is 121142057. The next prime is 121142101. The reversal of 121142079 is 970241121.

It is an interprime number because it is at equal distance from previous prime (121142057) and next prime (121142101).

It is not a de Polignac number, because 121142079 - 2¹² = 121137983 is a prime.

It is a super-3 number, since 3×121142079³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216822 + ... + 217379.

It is an arithmetic number, because the mean of its divisors is an integer number (15052336).

Almost surely, 2^121142079 is an apocalyptic number.

121142079 is a deficient number, since it is larger than the sum of its proper divisors (59485953).

121142079 is a wasteful number, since it uses less digits than its factorization.

121142079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434238 (or 434235 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 121142079 is about 11006.4562416792. The cubic root of 121142079 is about 494.8022595549.

The spelling of 121142079 in words is "one hundred twenty-one million, one hundred forty-two thousand, seventy-nine".