1234153421 has 2 divisors, whose sum is σ = 1234153422. Its totient is φ = 1234153420.

The previous prime is 1234153409. The next prime is 1234153433. The reversal of 1234153421 is 1243514321.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1234153409) and next prime (1234153433).

It can be written as a sum of positive squares in only one way, i.e., 1224300100 + 9853321 = 34990^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234153421 - 2⁶ = 1234153357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234123421) by changing a digit.

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, 617076710 + 617076711.

It is an arithmetic number, because the mean of its divisors is an integer number (617076711).

Almost surely, 2^1234153421 is an apocalyptic number.

It is an amenable number.

1234153421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234153421 is an equidigital number, since it uses as much as digits as its factorization.

1234153421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 1234153421 is about 35130.5197940480. The cubic root of 1234153421 is about 1072.6459165776.

Adding to 1234153421 its reverse (1243514321), we get a palindrome (2477667742).

The spelling of 1234153421 in words is "one billion, two hundred thirty-four million, one hundred fifty-three thousand, four hundred twenty-one".