1235442401 has 4 divisors (see below), whose sum is σ = 1289157312. Its totient is φ = 1181727492.

The previous prime is 1235442391. The next prime is 1235442407. The reversal of 1235442401 is 1042445321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1042445321 = 17 ⋅61320313.

It is a cyclic number.

It is not a de Polignac number, because 1235442401 - 2²² = 1231248097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235442407) 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, 26857421 + ... + 26857466.

It is an arithmetic number, because the mean of its divisors is an integer number (322289328).

Almost surely, 2^1235442401 is an apocalyptic number.

It is an amenable number.

1235442401 is a deficient number, since it is larger than the sum of its proper divisors (53714911).

1235442401 is an equidigital number, since it uses as much as digits as its factorization.

1235442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53714910.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1235442401 is about 35148.8605931970. The cubic root of 1235442401 is about 1073.0192191838.

Adding to 1235442401 its reverse (1042445321), we get a palindrome (2277887722).

The spelling of 1235442401 in words is "one billion, two hundred thirty-five million, four hundred forty-two thousand, four hundred one".