151126421 has 2 divisors, whose sum is σ = 151126422. Its totient is φ = 151126420.

The previous prime is 151126397. The next prime is 151126433. The reversal of 151126421 is 124621151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150945796 + 180625 = 12286^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 151126421 - 2⁶ = 151126357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151126471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75563210 + 75563211.

It is an arithmetic number, because the mean of its divisors is an integer number (75563211).

Almost surely, 2^151126421 is an apocalyptic number.

It is an amenable number.

151126421 is a deficient number, since it is larger than the sum of its proper divisors (1).

151126421 is an equidigital number, since it uses as much as digits as its factorization.

151126421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 151126421 is about 12293.3486487612. The cubic root of 151126421 is about 532.6559702402.

Adding to 151126421 its reverse (124621151), we get a palindrome (275747572).

The spelling of 151126421 in words is "one hundred fifty-one million, one hundred twenty-six thousand, four hundred twenty-one".