126912340 has 12 divisors (see below), whose sum is σ = 266515956. Its totient is φ = 50764928.

The previous prime is 126912337. The next prime is 126912341. The reversal of 126912340 is 43219621.

It can be written as a sum of positive squares in 2 ways, for example, as 100881936 + 26030404 = 10044^2 + 5102^2 .

It is a super-2 number, since 2×126912340² = 32213484088551200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126912299 and 126912308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126912341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3172789 + ... + 3172828.

It is an arithmetic number, because the mean of its divisors is an integer number (22209663).

Almost surely, 2^126912340 is an apocalyptic number.

126912340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126912340 is an abundant number, since it is smaller than the sum of its proper divisors (139603616).

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

126912340 is a wasteful number, since it uses less digits than its factorization.

126912340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345626 (or 6345624 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 126912340 is about 11265.5377146411. The cubic root of 126912340 is about 502.5368932427.

The spelling of 126912340 in words is "one hundred twenty-six million, nine hundred twelve thousand, three hundred forty".