120438 has 12 divisors (see below), whose sum is σ = 260988. Its totient is φ = 40140.

The previous prime is 120431. The next prime is 120473. The reversal of 120438 is 834021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6691 = 120438 / (1 + 2 + 0 + 4 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 120438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120431) 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, 3328 + ... + 3363.

It is an arithmetic number, because the mean of its divisors is an integer number (21749).

2¹²⁰⁴³⁸ is an apocalyptic number.

120438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

120438 is an abundant number, since it is smaller than the sum of its proper divisors (140550).

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

120438 is a wasteful number, since it uses less digits than its factorization.

120438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699 (or 6696 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 120438 is about 347.0417842278. The cubic root of 120438 is about 49.3841797812.

Adding to 120438 its reverse (834021), we get a palindrome (954459).

The spelling of 120438 in words is "one hundred twenty thousand, four hundred thirty-eight".