125421378 has 16 divisors (see below), whose sum is σ = 256961376. Its totient is φ = 40787360.

The previous prime is 125421353. The next prime is 125421403. The reversal of 125421378 is 873124521.

It is an interprime number because it is at equal distance from previous prime (125421353) and next prime (125421403).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254676 + ... + 255167.

It is an arithmetic number, because the mean of its divisors is an integer number (16060086).

Almost surely, 2^125421378 is an apocalyptic number.

125421378 is an abundant number, since it is smaller than the sum of its proper divisors (131539998).

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

125421378 is a wasteful number, since it uses less digits than its factorization.

125421378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509889.

The product of its digits is 13440, while the sum is 33.

The square root of 125421378 is about 11199.1686298582. The cubic root of 125421378 is about 500.5612071906.

Adding to 125421378 its reverse (873124521), we get a palindrome (998545899).

The spelling of 125421378 in words is "one hundred twenty-five million, four hundred twenty-one thousand, three hundred seventy-eight".