425540123 has 2 divisors, whose sum is σ = 425540124. Its totient is φ = 425540122.

The previous prime is 425540119. The next prime is 425540147. The reversal of 425540123 is 321045524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425540123 - 2² = 425540119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425540092 and 425540101.

It is not a weakly prime, because it can be changed into another prime (425540153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212770061 + 212770062.

It is an arithmetic number, because the mean of its divisors is an integer number (212770062).

Almost surely, 2^425540123 is an apocalyptic number.

425540123 is a deficient number, since it is larger than the sum of its proper divisors (1).

425540123 is an equidigital number, since it uses as much as digits as its factorization.

425540123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 425540123 is about 20628.6238755764. The cubic root of 425540123 is about 752.1656652470.

Adding to 425540123 its reverse (321045524), we get a palindrome (746585647).

The spelling of 425540123 in words is "four hundred twenty-five million, five hundred forty thousand, one hundred twenty-three".