421150561 has 24 divisors (see below), whose sum is σ = 487397120. Its totient is φ = 360749376.

The previous prime is 421150559. The next prime is 421150567. The reversal of 421150561 is 165051124.

It is a happy number.

It is not a de Polignac number, because 421150561 - 2¹ = 421150559 is a prime.

It is a super-2 number, since 2×421150561² = 354735590061229442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421150567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693520 + ... + 694126.

Almost surely, 2^421150561 is an apocalyptic number.

It is an amenable number.

421150561 is a deficient number, since it is larger than the sum of its proper divisors (66246559).

421150561 is a wasteful number, since it uses less digits than its factorization.

421150561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 421150561 is about 20521.9531477879. The cubic root of 421150561 is about 749.5704568520.

The spelling of 421150561 in words is "four hundred twenty-one million, one hundred fifty thousand, five hundred sixty-one".