1235400042 has 16 divisors (see below), whose sum is σ = 2476846080. Its totient is φ = 410792352.

The previous prime is 1235400017. The next prime is 1235400043. The reversal of 1235400042 is 2400045321.

It is a junction number, because it is equal to n+sod(n) for n = 1235399991 and 1235400018.

It is not an unprimeable number, because it can be changed into a prime (1235400043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249258 + ... + 254165.

It is an arithmetic number, because the mean of its divisors is an integer number (154802880).

Almost surely, 2^1235400042 is an apocalyptic number.

1235400042 is an abundant number, since it is smaller than the sum of its proper divisors (1241446038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1235400042 is a wasteful number, since it uses less digits than its factorization.

1235400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503837.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1235400042 is about 35148.2580222690. The cubic root of 1235400042 is about 1073.0069556846.

Adding to 1235400042 its reverse (2400045321), we get a palindrome (3635445363).

The spelling of 1235400042 in words is "one billion, two hundred thirty-five million, four hundred thousand, forty-two".