138362427 has 60 divisors (see below), whose sum is σ = 246151880. Its totient is φ = 74680704.

The previous prime is 138362423. The next prime is 138362431. The reversal of 138362427 is 724263831.

It is a happy number.

138362427 is a `hidden beast` number, since 1 + 3 + 8 + 3 + 624 + 27 = 666.

It is an interprime number because it is at equal distance from previous prime (138362423) and next prime (138362431).

It is not a de Polignac number, because 138362427 - 2² = 138362423 is a prime.

It is a super-2 number, since 2×138362427² = 38288322410660658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138362391 and 138362400.

It is not an unprimeable number, because it can be changed into a prime (138362423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 410403 + ... + 410739.

Almost surely, 2^138362427 is an apocalyptic number.

138362427 is a deficient number, since it is larger than the sum of its proper divisors (107789453).

138362427 is an equidigital number, since it uses as much as digits as its factorization.

138362427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 366 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 138362427 is about 11762.7559270776. The cubic root of 138362427 is about 517.2169200236.

The spelling of 138362427 in words is "one hundred thirty-eight million, three hundred sixty-two thousand, four hundred twenty-seven".