38400121 has 8 divisors (see below), whose sum is σ = 40544000. Its totient is φ = 36268560.

The previous prime is 38400107. The next prime is 38400157. The reversal of 38400121 is 12100483.

38400121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 38400121 - 2¹⁹ = 37875833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38400181) 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 7 ways as a sum of consecutive naturals, for example, 3736 + ... + 9526.

It is an arithmetic number, because the mean of its divisors is an integer number (5068000).

Almost surely, 2^38400121 is an apocalyptic number.

It is an amenable number.

38400121 is a deficient number, since it is larger than the sum of its proper divisors (2143879).

38400121 is a wasteful number, since it uses less digits than its factorization.

38400121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 38400121 is about 6196.7831170697. The cubic root of 38400121 is about 337.3734204792.

The spelling of 38400121 in words is "thirty-eight million, four hundred thousand, one hundred twenty-one".