1235252105 has 4 divisors (see below), whose sum is σ = 1482302532. Its totient is φ = 988201680.

The previous prime is 1235252101. The next prime is 1235252131. The reversal of 1235252105 is 5012525321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5012525321 = 2503 ⋅2002607.

It can be written as a sum of positive squares in 2 ways, for example, as 196672576 + 1038579529 = 14024^2 + 32227^2 .

It is not a de Polignac number, because 1235252105 - 2² = 1235252101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235252101) 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 3 ways as a sum of consecutive naturals, for example, 123525206 + ... + 123525215.

It is an arithmetic number, because the mean of its divisors is an integer number (370575633).

Almost surely, 2^1235252105 is an apocalyptic number.

It is an amenable number.

1235252105 is a deficient number, since it is larger than the sum of its proper divisors (247050427).

1235252105 is an equidigital number, since it uses as much as digits as its factorization.

1235252105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247050426.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1235252105 is about 35146.1534879708. The cubic root of 1235252105 is about 1072.9641237378.

Adding to 1235252105 its reverse (5012525321), we get a palindrome (6247777426).

The spelling of 1235252105 in words is "one billion, two hundred thirty-five million, two hundred fifty-two thousand, one hundred five".