1234452421252 has 6 divisors (see below), whose sum is σ = 2160291737198. Its totient is φ = 617226210624.

The previous prime is 1234452421243. The next prime is 1234452421289. The reversal of 1234452421252 is 2521242544321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 795978014976 + 438474406276 = 892176^2 + 662174^2 .

It is a super-2 number, since 2×1234452421252² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154306552653 + ... + 154306552660.

Almost surely, 2^{1234452421252} is an apocalyptic number.

It is an amenable number.

1234452421252 is a deficient number, since it is larger than the sum of its proper divisors (925839315946).

1234452421252 is a wasteful number, since it uses less digits than its factorization.

1234452421252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308613105317 (or 308613105315 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 1234452421252 its reverse (2521242544321), we get a palindrome (3755694965573).

The spelling of 1234452421252 in words is "one trillion, two hundred thirty-four billion, four hundred fifty-two million, four hundred twenty-one thousand, two hundred fifty-two".