421053749 has 16 divisors (see below), whose sum is σ = 444165120. Its totient is φ = 398640000.

The previous prime is 421053733. The next prime is 421053767. The reversal of 421053749 is 947350124.

It is a cyclic number.

It is not a de Polignac number, because 421053749 - 2⁴ = 421053733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421053719) 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 15 ways as a sum of consecutive naturals, for example, 277904 + ... + 279414.

It is an arithmetic number, because the mean of its divisors is an integer number (27760320).

Almost surely, 2^421053749 is an apocalyptic number.

It is an amenable number.

421053749 is a deficient number, since it is larger than the sum of its proper divisors (23111371).

421053749 is a wasteful number, since it uses less digits than its factorization.

421053749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 421053749 is about 20519.5942698680. The cubic root of 421053749 is about 749.5130166054.

It can be divided in two parts, 42105 and 3749, that added together give a palindrome (45854).

The spelling of 421053749 in words is "four hundred twenty-one million, fifty-three thousand, seven hundred forty-nine".