126450030 has 32 divisors (see below), whose sum is σ = 346834944. Its totient is φ = 28902816.

The previous prime is 126450017. The next prime is 126450031. The reversal of 126450030 is 30054621.

126450030 = 5621² + 5622² + ... + 5624².

It is a happy number.

It is a super-2 number, since 2×126450030² = 31979220174001800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 126449979 and 126450006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126450031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300862 + ... + 301281.

It is an arithmetic number, because the mean of its divisors is an integer number (10838592).

Almost surely, 2^126450030 is an apocalyptic number.

126450030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126450030 is an abundant number, since it is smaller than the sum of its proper divisors (220384914).

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

126450030 is a wasteful number, since it uses less digits than its factorization.

126450030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602160.

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

The square root of 126450030 is about 11245.0002223210. Note that the first 3 decimals coincide. The cubic root of 126450030 is about 501.9259452778.

The spelling of 126450030 in words is "one hundred twenty-six million, four hundred fifty thousand, thirty".