1235142073 has 4 divisors (see below), whose sum is σ = 1347427728. Its totient is φ = 1122856420.

The previous prime is 1235142043. The next prime is 1235142107. The reversal of 1235142073 is 3702415321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1235142073 - 2¹³ = 1235133881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235142043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56142811 + ... + 56142832.

It is an arithmetic number, because the mean of its divisors is an integer number (336856932).

Almost surely, 2^1235142073 is an apocalyptic number.

It is an amenable number.

1235142073 is a deficient number, since it is larger than the sum of its proper divisors (112285655).

1235142073 is a wasteful number, since it uses less digits than its factorization.

1235142073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112285654.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1235142073 is about 35144.5881040026. The cubic root of 1235142073 is about 1072.9322641432.

Adding to 1235142073 its reverse (3702415321), we get a palindrome (4937557394).

The spelling of 1235142073 in words is "one billion, two hundred thirty-five million, one hundred forty-two thousand, seventy-three".