421087755 has 16 divisors (see below), whose sum is σ = 734989824. Its totient is φ = 204163680.

The previous prime is 421087687. The next prime is 421087757. The reversal of 421087755 is 557780124.

It is not a de Polignac number, because 421087755 - 2¹⁶ = 421022219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421087757) 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, 1275859 + ... + 1276188.

It is an arithmetic number, because the mean of its divisors is an integer number (45936864).

Almost surely, 2^421087755 is an apocalyptic number.

421087755 is a deficient number, since it is larger than the sum of its proper divisors (313902069).

421087755 is a wasteful number, since it uses less digits than its factorization.

421087755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552066.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 421087755 is about 20520.4228757597. The cubic root of 421087755 is about 749.5331939609.

The spelling of 421087755 in words is "four hundred twenty-one million, eighty-seven thousand, seven hundred fifty-five".