1235402042 has 8 divisors (see below), whose sum is σ = 2117832096. Its totient is φ = 529458012.

The previous prime is 1235402041. The next prime is 1235402089. The reversal of 1235402042 is 2402045321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1235401999 and 1235402017.

It is not an unprimeable number, because it can be changed into a prime (1235402041) 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, 44121488 + ... + 44121515.

It is an arithmetic number, because the mean of its divisors is an integer number (264729012).

Almost surely, 2^1235402042 is an apocalyptic number.

1235402042 is a deficient number, since it is larger than the sum of its proper divisors (882430054).

1235402042 is an equidigital number, since it uses as much as digits as its factorization.

1235402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88243012.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1235402042 is about 35148.2864731696. The cubic root of 1235402042 is about 1073.0075347178.

Adding to 1235402042 its reverse (2402045321), we get a palindrome (3637447363).

The spelling of 1235402042 in words is "one billion, two hundred thirty-five million, four hundred two thousand, forty-two".