1242001300535 has 16 divisors (see below), whose sum is σ = 1556844005376. Its totient is φ = 949397320608.

The previous prime is 1242001300531. The next prime is 1242001300541. The reversal of 1242001300535 is 5350031002421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1242001300535 - 2² = 1242001300531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242001300531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5593319 + ... + 5811128.

It is an arithmetic number, because the mean of its divisors is an integer number (97302750336).

Almost surely, 2^{1242001300535} is an apocalyptic number.

1242001300535 is a deficient number, since it is larger than the sum of its proper divisors (314842704841).

1242001300535 is a wasteful number, since it uses less digits than its factorization.

1242001300535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11405422.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1242001300535 its reverse (5350031002421), we get a palindrome (6592032302956).

The spelling of 1242001300535 in words is "one trillion, two hundred forty-two billion, one million, three hundred thousand, five hundred thirty-five".