126421320 has 32 divisors (see below), whose sum is σ = 379264320. Its totient is φ = 33712320.

The previous prime is 126421313. The next prime is 126421331. The reversal of 126421320 is 23124621.

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, 526636 + ... + 526875.

It is an arithmetic number, because the mean of its divisors is an integer number (11852010).

Almost surely, 2^126421320 is an apocalyptic number.

126421320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126421320 is an abundant number, since it is smaller than the sum of its proper divisors (252843000).

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

126421320 is a wasteful number, since it uses less digits than its factorization.

126421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053525 (or 1053521 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 126421320 is about 11243.7235825148. The cubic root of 126421320 is about 501.8879556081.

Adding to 126421320 its reverse (23124621), we get a palindrome (149545941).

The spelling of 126421320 in words is "one hundred twenty-six million, four hundred twenty-one thousand, three hundred twenty".