420150751 has 4 divisors (see below), whose sum is σ = 420314400. Its totient is φ = 419987104.

The previous prime is 420150707. The next prime is 420150793. The reversal of 420150751 is 157051024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420150751 - 2¹⁹ = 419626463 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 (420150701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77911 + ... + 83128.

It is an arithmetic number, because the mean of its divisors is an integer number (105078600).

Almost surely, 2^420150751 is an apocalyptic number.

420150751 is a deficient number, since it is larger than the sum of its proper divisors (163649).

420150751 is a wasteful number, since it uses less digits than its factorization.

420150751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163648.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 420150751 is about 20497.5791497435. The cubic root of 420150751 is about 748.9768276072.

The spelling of 420150751 in words is "four hundred twenty million, one hundred fifty thousand, seven hundred fifty-one".