150421639 has 2 divisors, whose sum is σ = 150421640. Its totient is φ = 150421638.

The previous prime is 150421619. The next prime is 150421657. The reversal of 150421639 is 936124051.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 150421639 - 2⁷ = 150421511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 150421639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150421619) 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, 75210819 + 75210820.

It is an arithmetic number, because the mean of its divisors is an integer number (75210820).

Almost surely, 2^150421639 is an apocalyptic number.

150421639 is a deficient number, since it is larger than the sum of its proper divisors (1).

150421639 is an equidigital number, since it uses as much as digits as its factorization.

150421639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 150421639 is about 12264.6499746222. The cubic root of 150421639 is about 531.8266614037.

The spelling of 150421639 in words is "one hundred fifty million, four hundred twenty-one thousand, six hundred thirty-nine".