126153640 has 32 divisors (see below), whose sum is σ = 289889280. Its totient is φ = 49387072.

The previous prime is 126153631. The next prime is 126153647. The reversal of 126153640 is 46351621.

It is a junction number, because it is equal to n+sod(n) for n = 126153599 and 126153608.

It is not an unprimeable number, because it can be changed into a prime (126153647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31672 + ... + 35431.

It is an arithmetic number, because the mean of its divisors is an integer number (9059040).

Almost surely, 2^126153640 is an apocalyptic number.

126153640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126153640 is an abundant number, since it is smaller than the sum of its proper divisors (163735640).

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

126153640 is a wasteful number, since it uses less digits than its factorization.

126153640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67161 (or 67157 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 126153640 is about 11231.8137448945. The cubic root of 126153640 is about 501.5334787445.

The spelling of 126153640 in words is "one hundred twenty-six million, one hundred fifty-three thousand, six hundred forty".