121429845 has 12 divisors (see below), whose sum is σ = 210478476. Its totient is φ = 64762560.

The previous prime is 121429843. The next prime is 121429877. The reversal of 121429845 is 548924121.

It can be written as a sum of positive squares in 2 ways, for example, as 63776196 + 57653649 = 7986^2 + 7593^2 .

It is not a de Polignac number, because 121429845 - 2¹ = 121429843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121429843) 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, 1349176 + ... + 1349265.

It is an arithmetic number, because the mean of its divisors is an integer number (17539873).

Almost surely, 2^121429845 is an apocalyptic number.

121429845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121429845 is a deficient number, since it is larger than the sum of its proper divisors (89048631).

121429845 is a wasteful number, since it uses less digits than its factorization.

121429845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698452 (or 2698449 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 121429845 is about 11019.5210875972. The cubic root of 121429845 is about 495.1937411180.

The spelling of 121429845 in words is "one hundred twenty-one million, four hundred twenty-nine thousand, eight hundred forty-five".