126213040 has 20 divisors (see below), whose sum is σ = 293445504. Its totient is φ = 50485184.

The previous prime is 126213013. The next prime is 126213097. The reversal of 126213040 is 40312621.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 126212999 and 126213017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788752 + ... + 788911.

Almost surely, 2^126213040 is an apocalyptic number.

126213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126213040 is an abundant number, since it is smaller than the sum of its proper divisors (167232464).

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

126213040 is a wasteful number, since it uses less digits than its factorization.

126213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577676 (or 1577670 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 126213040 is about 11234.4577083186. The cubic root of 126213040 is about 501.6121828128.

Adding to 126213040 its reverse (40312621), we get a palindrome (166525661).

The spelling of 126213040 in words is "one hundred twenty-six million, two hundred thirteen thousand, forty".