42633149 has 8 divisors (see below), whose sum is σ = 46387320. Its totient is φ = 38946816.

The previous prime is 42633133. The next prime is 42633181. The reversal of 42633149 is 94133624.

42633149 = 1268² + 1269² + ... + 1293².

It can be written as a sum of positive squares in 4 ways, for example, as 1737124 + 40896025 = 1318^2 + 6395^2 .

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 42633149 - 2⁴ = 42633133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42633109) 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, 15644 + ... + 18165.

It is an arithmetic number, because the mean of its divisors is an integer number (5798415).

Almost surely, 2^42633149 is an apocalyptic number.

It is an amenable number.

42633149 is a deficient number, since it is larger than the sum of its proper divisors (3754171).

42633149 is a wasteful number, since it uses less digits than its factorization.

42633149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33919.

The product of its digits is 15552, while the sum is 32.

The square root of 42633149 is about 6529.4064814499. The cubic root of 42633149 is about 349.3406607400.

The spelling of 42633149 in words is "forty-two million, six hundred thirty-three thousand, one hundred forty-nine".