421757149 has 8 divisors (see below), whose sum is σ = 461384640. Its totient is φ = 382344000.

The previous prime is 421757129. The next prime is 421757173. The reversal of 421757149 is 941757124.

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 421757149 - 2⁹ = 421756637 is a prime.

It is a super-3 number, since 3×421757149³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421757129) 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 in 7 ways as a sum of consecutive naturals, for example, 49452 + ... + 57349.

It is an arithmetic number, because the mean of its divisors is an integer number (57673080).

Almost surely, 2^421757149 is an apocalyptic number.

It is an amenable number.

421757149 is a deficient number, since it is larger than the sum of its proper divisors (39627491).

421757149 is a wasteful number, since it uses less digits than its factorization.

421757149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107171.

The product of its digits is 70560, while the sum is 40.

The square root of 421757149 is about 20536.7268326771. The cubic root of 421757149 is about 749.9301558663.

The spelling of 421757149 in words is "four hundred twenty-one million, seven hundred fifty-seven thousand, one hundred forty-nine".