151434421 has 2 divisors, whose sum is σ = 151434422. Its totient is φ = 151434420.

The previous prime is 151434403. The next prime is 151434449. The reversal of 151434421 is 124434151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79014321 + 72420100 = 8889^2 + 8510^2 .

It is an emirp because it is prime and its reverse (124434151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151434421 - 2¹¹ = 151432373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151434401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75717210 + 75717211.

It is an arithmetic number, because the mean of its divisors is an integer number (75717211).

Almost surely, 2^151434421 is an apocalyptic number.

It is an amenable number.

151434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

151434421 is an equidigital number, since it uses as much as digits as its factorization.

151434421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 151434421 is about 12305.8693719704. The cubic root of 151434421 is about 533.0175807649.

Adding to 151434421 its reverse (124434151), we get a palindrome (275868572).

The spelling of 151434421 in words is "one hundred fifty-one million, four hundred thirty-four thousand, four hundred twenty-one".