421451540 has 48 divisors (see below), whose sum is σ = 972155520. Its totient is φ = 152760960.

The previous prime is 421451533. The next prime is 421451543. The reversal of 421451540 is 45154124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421451543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15371 + ... + 32850.

It is an arithmetic number, because the mean of its divisors is an integer number (20253240).

Almost surely, 2^421451540 is an apocalyptic number.

It is an amenable number.

421451540 is an abundant number, since it is smaller than the sum of its proper divisors (550703980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421451540 is a wasteful number, since it uses less digits than its factorization.

421451540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48272 (or 48270 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 421451540 is about 20529.2849364024. The cubic root of 421451540 is about 749.7489767332.

The spelling of 421451540 in words is "four hundred twenty-one million, four hundred fifty-one thousand, five hundred forty".