121271634 has 32 divisors (see below), whose sum is σ = 293993280. Its totient is φ = 36748800.

The previous prime is 121271611. The next prime is 121271641. The reversal of 121271634 is 436172121.

121271634 is a `hidden beast` number, since 1 + 2 + 1 + 27 + 1 + 634 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121271598 and 121271607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101487 + ... + 102674.

It is an arithmetic number, because the mean of its divisors is an integer number (9187290).

Almost surely, 2^121271634 is an apocalyptic number.

121271634 is an abundant number, since it is smaller than the sum of its proper divisors (172721646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121271634 is a wasteful number, since it uses less digits than its factorization.

121271634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204183 (or 204177 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 121271634 is about 11012.3400782940. The cubic root of 121271634 is about 494.9785849321.

The spelling of 121271634 in words is "one hundred twenty-one million, two hundred seventy-one thousand, six hundred thirty-four".