149921141 has 2 divisors, whose sum is σ = 149921142. Its totient is φ = 149921140.

The previous prime is 149921119. The next prime is 149921159. The reversal of 149921141 is 141129941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114041041 + 35880100 = 10679^2 + 5990^2 .

It is a cyclic number.

It is not a de Polignac number, because 149921141 - 2¹⁸ = 149658997 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149921098 and 149921107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149921111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74960570 + 74960571.

It is an arithmetic number, because the mean of its divisors is an integer number (74960571).

Almost surely, 2^149921141 is an apocalyptic number.

It is an amenable number.

149921141 is a deficient number, since it is larger than the sum of its proper divisors (1).

149921141 is an equidigital number, since it uses as much as digits as its factorization.

149921141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 149921141 is about 12244.2288854791. The cubic root of 149921141 is about 531.2361569449.

The spelling of 149921141 in words is "one hundred forty-nine million, nine hundred twenty-one thousand, one hundred forty-one".