126405030 has 32 divisors (see below), whose sum is σ = 321218784. Its totient is φ = 31725056.

The previous prime is 126405029. The next prime is 126405031. The reversal of 126405030 is 30504621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126405029) and next prime (126405031).

It is a junction number, because it is equal to n+sod(n) for n = 126404988 and 126405006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126405031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123417 + ... + 124436.

It is an arithmetic number, because the mean of its divisors is an integer number (10038087).

Almost surely, 2^126405030 is an apocalyptic number.

126405030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126405030 is an abundant number, since it is smaller than the sum of its proper divisors (194813754).

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

126405030 is a wasteful number, since it uses less digits than its factorization.

126405030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247880.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 126405030 is about 11242.9991550298. Note that the first 3 decimals coincide. The cubic root of 126405030 is about 501.8663977833.

Adding to 126405030 its reverse (30504621), we get a palindrome (156909651).

The spelling of 126405030 in words is "one hundred twenty-six million, four hundred five thousand, thirty".