138167420 has 24 divisors (see below), whose sum is σ = 294241248. Its totient is φ = 54488000.

The previous prime is 138167413. The next prime is 138167429. The reversal of 138167420 is 24761831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138167429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47231 + ... + 50070.

It is an arithmetic number, because the mean of its divisors is an integer number (12260052).

Almost surely, 2^138167420 is an apocalyptic number.

138167420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138167420 is an abundant number, since it is smaller than the sum of its proper divisors (156073828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138167420 is a wasteful number, since it uses less digits than its factorization.

138167420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97381 (or 97379 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 138167420 is about 11754.4638329445. The cubic root of 138167420 is about 516.9738185221.

The spelling of 138167420 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, four hundred twenty".