1234521434 has 4 divisors (see below), whose sum is σ = 1851782154. Its totient is φ = 617260716.

The previous prime is 1234521383. The next prime is 1234521437. The reversal of 1234521434 is 4341254321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4341254321 = 24943 ⋅174047.

It can be written as a sum of positive squares in only one way, i.e., 838392025 + 396129409 = 28955^2 + 19903^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1234521397 and 1234521406.

It is not an unprimeable number, because it can be changed into a prime (1234521437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308630357 + ... + 308630360.

Almost surely, 2^1234521434 is an apocalyptic number.

1234521434 is a deficient number, since it is larger than the sum of its proper divisors (617260720).

1234521434 is an equidigital number, since it uses as much as digits as its factorization.

1234521434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617260719.

The product of its digits is 11520, while the sum is 29.

The square root of 1234521434 is about 35135.7571997531. The cubic root of 1234521434 is about 1072.7525236398.

Adding to 1234521434 its reverse (4341254321), we get a palindrome (5575775755).

The spelling of 1234521434 in words is "one billion, two hundred thirty-four million, five hundred twenty-one thousand, four hundred thirty-four".