138030454 has 8 divisors (see below), whose sum is σ = 207226008. Its totient is φ = 68955120.

The previous prime is 138030449. The next prime is 138030457. The reversal of 138030454 is 454030831.

138030454 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 super-2 number, since 2×138030454² = 38104812462892232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138030457) 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, 27127 + ... + 31810.

It is an arithmetic number, because the mean of its divisors is an integer number (25903251).

Almost surely, 2^138030454 is an apocalyptic number.

138030454 is a deficient number, since it is larger than the sum of its proper divisors (69195554).

138030454 is a wasteful number, since it uses less digits than its factorization.

138030454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60110.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 138030454 is about 11748.6362612858. The cubic root of 138030454 is about 516.8029358680.

The spelling of 138030454 in words is "one hundred thirty-eight million, thirty thousand, four hundred fifty-four".