38102121 has 6 divisors (see below), whose sum is σ = 55036410. Its totient is φ = 25401408.

The previous prime is 38102093. The next prime is 38102153. The reversal of 38102121 is 12120183.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 15492096 = 4755^2 + 3936^2 .

It is not a de Polignac number, because 38102121 - 2⁷ = 38101993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38102094 and 38102103.

It is not an unprimeable number, because it can be changed into a prime (38112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2116776 + ... + 2116793.

It is an arithmetic number, because the mean of its divisors is an integer number (9172735).

Almost surely, 2^38102121 is an apocalyptic number.

It is an amenable number.

38102121 is a deficient number, since it is larger than the sum of its proper divisors (16934289).

38102121 is a wasteful number, since it uses less digits than its factorization.

38102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233575 (or 4233572 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 38102121 is about 6172.6915523133. The cubic root of 38102121 is about 336.4984364659.

The spelling of 38102121 in words is "thirty-eight million, one hundred two thousand, one hundred twenty-one".