121295138 has 8 divisors (see below), whose sum is σ = 186380460. Its totient is φ = 59168320.

The previous prime is 121295137. The next prime is 121295147. The reversal of 121295138 is 831592121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118222129 + 3073009 = 10873^2 + 1753^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121295137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739523 + ... + 739686.

Almost surely, 2^121295138 is an apocalyptic number.

121295138 is a deficient number, since it is larger than the sum of its proper divisors (65085322).

121295138 is a wasteful number, since it uses less digits than its factorization.

121295138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479252.

The product of its digits is 4320, while the sum is 32.

The square root of 121295138 is about 11013.4071930534. The cubic root of 121295138 is about 495.0105606018.

The spelling of 121295138 in words is "one hundred twenty-one million, two hundred ninety-five thousand, one hundred thirty-eight".