149741217 has 12 divisors (see below), whose sum is σ = 224304080. Its totient is φ = 99827316.

The previous prime is 149741203. The next prime is 149741227. The reversal of 149741217 is 712147941.

It is not a de Polignac number, because 149741217 - 2¹¹ = 149739169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149741227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307867 + ... + 308352.

Almost surely, 2^149741217 is an apocalyptic number.

It is an amenable number.

149741217 is a deficient number, since it is larger than the sum of its proper divisors (74562863).

149741217 is an frugal number, since it uses more digits than its factorization.

149741217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616234 (or 616222 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 149741217 is about 12236.8793816071. The cubic root of 149741217 is about 531.0235554044.

It can be divided in two parts, 14974121 and 7, that added together give a triangular number (14974128 = T₅₄₇₂).

The spelling of 149741217 in words is "one hundred forty-nine million, seven hundred forty-one thousand, two hundred seventeen".