1235520342152 has 8 divisors (see below), whose sum is σ = 2316600641550. Its totient is φ = 617760171072.

The previous prime is 1235520342149. The next prime is 1235520342193. The reversal of 1235520342152 is 2512430255321.

It can be written as a sum of positive squares in only one way, i.e., 1027170088036 + 208350254116 = 1013494^2 + 456454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1235520342152² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77220021377 + ... + 77220021392.

Almost surely, 2^{1235520342152} is an apocalyptic number.

It is an amenable number.

1235520342152 is a deficient number, since it is larger than the sum of its proper divisors (1081080299398).

1235520342152 is a wasteful number, since it uses less digits than its factorization.

1235520342152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154440042775 (or 154440042771 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 1235520342152 its reverse (2512430255321), we get a palindrome (3747950597473).

The spelling of 1235520342152 in words is "one trillion, two hundred thirty-five billion, five hundred twenty million, three hundred forty-two thousand, one hundred fifty-two".