123042025 has 12 divisors (see below), whose sum is σ = 156294684. Its totient is φ = 96032000.

The previous prime is 123042013. The next prime is 123042037. The reversal of 123042025 is 520240321.

It is an interprime number because it is at equal distance from previous prime (123042013) and next prime (123042037).

It can be written as a sum of positive squares in 6 ways, for example, as 57577744 + 65464281 = 7588^2 + 8091^2 .

It is not a de Polignac number, because 123042025 - 2⁵ = 123041993 is a prime.

It is a super-2 number, since 2×123042025² = 30278679832201250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123041993 and 123042011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58996 + ... + 61045.

It is an arithmetic number, because the mean of its divisors is an integer number (13024557).

Almost surely, 2^123042025 is an apocalyptic number.

It is an amenable number.

123042025 is a deficient number, since it is larger than the sum of its proper divisors (33252659).

123042025 is a wasteful number, since it uses less digits than its factorization.

123042025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120092 (or 120087 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 123042025 is about 11092.4309779236. The cubic root of 123042025 is about 497.3756159840.

Adding to 123042025 its reverse (520240321), we get a palindrome (643282346).

The spelling of 123042025 in words is "one hundred twenty-three million, forty-two thousand, twenty-five".