388024121 has 4 divisors (see below), whose sum is σ = 388089744. Its totient is φ = 387958500.

The previous prime is 388024103. The next prime is 388024129. The reversal of 388024121 is 121420883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121420883 = 29 ⋅4186927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388024121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388024129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22955 + ... + 36096.

It is an arithmetic number, because the mean of its divisors is an integer number (97022436).

Almost surely, 2^388024121 is an apocalyptic number.

It is an amenable number.

388024121 is a deficient number, since it is larger than the sum of its proper divisors (65623).

388024121 is an equidigital number, since it uses as much as digits as its factorization.

388024121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65622.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 388024121 is about 19698.3278731978. The cubic root of 388024121 is about 729.3784169010.

The spelling of 388024121 in words is "three hundred eighty-eight million, twenty-four thousand, one hundred twenty-one".