150699421 has 2 divisors, whose sum is σ = 150699422. Its totient is φ = 150699420.

The previous prime is 150699413. The next prime is 150699443. The reversal of 150699421 is 124996051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84456100 + 66243321 = 9190^2 + 8139^2 .

It is an emirp because it is prime and its reverse (124996051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150699421 - 2³ = 150699413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150699221) 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, 75349710 + 75349711.

It is an arithmetic number, because the mean of its divisors is an integer number (75349711).

Almost surely, 2^150699421 is an apocalyptic number.

It is an amenable number.

150699421 is a deficient number, since it is larger than the sum of its proper divisors (1).

150699421 is an equidigital number, since it uses as much as digits as its factorization.

150699421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 150699421 is about 12275.9692489025. The cubic root of 150699421 is about 532.1538329231.

The spelling of 150699421 in words is "one hundred fifty million, six hundred ninety-nine thousand, four hundred twenty-one".