149217743 has 8 divisors (see below), whose sum is σ = 151166736. Its totient is φ = 147280000.

The previous prime is 149217727. The next prime is 149217763. The reversal of 149217743 is 347712941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149217743 - 2⁴ = 149217727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149217697 and 149217706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149217763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25733 + ... + 30993.

It is an arithmetic number, because the mean of its divisors is an integer number (18895842).

Almost surely, 2^149217743 is an apocalyptic number.

149217743 is a deficient number, since it is larger than the sum of its proper divisors (1948993).

149217743 is a wasteful number, since it uses less digits than its factorization.

149217743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625.

The product of its digits is 42336, while the sum is 38.

The square root of 149217743 is about 12215.4714604063. The cubic root of 149217743 is about 530.4040386507.

The spelling of 149217743 in words is "one hundred forty-nine million, two hundred seventeen thousand, seven hundred forty-three".