126225031 has 4 divisors (see below), whose sum is σ = 126300600. Its totient is φ = 126149464.

The previous prime is 126224981. The next prime is 126225041. The reversal of 126225031 is 130522621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130522621 = 4597 ⋅28393.

It is a cyclic number.

It is not a de Polignac number, because 126225031 - 2¹¹ = 126222983 is a prime.

It is a super-3 number, since 3×126225031³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126224993 and 126225011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126225041) 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, 35221 + ... + 38638.

It is an arithmetic number, because the mean of its divisors is an integer number (31575150).

Almost surely, 2^126225031 is an apocalyptic number.

126225031 is a deficient number, since it is larger than the sum of its proper divisors (75569).

126225031 is an equidigital number, since it uses as much as digits as its factorization.

126225031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75568.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 126225031 is about 11234.9913662628. The cubic root of 126225031 is about 501.6280677040.

Adding to 126225031 its reverse (130522621), we get a palindrome (256747652).

The spelling of 126225031 in words is "one hundred twenty-six million, two hundred twenty-five thousand, thirty-one".