421753542 has 32 divisors (see below), whose sum is σ = 982202112. Its totient is φ = 118226784.

The previous prime is 421753537. The next prime is 421753547. The reversal of 421753542 is 245357124.

It is an interprime number because it is at equal distance from previous prime (421753537) and next prime (421753547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421753547) 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, 92508 + ... + 96959.

It is an arithmetic number, because the mean of its divisors is an integer number (30693816).

Almost surely, 2^421753542 is an apocalyptic number.

421753542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

421753542 is an abundant number, since it is smaller than the sum of its proper divisors (560448570).

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

421753542 is a wasteful number, since it uses less digits than its factorization.

421753542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189532.

The product of its digits is 33600, while the sum is 33.

The square root of 421753542 is about 20536.6390142107. The cubic root of 421753542 is about 749.9280179806.

The spelling of 421753542 in words is "four hundred twenty-one million, seven hundred fifty-three thousand, five hundred forty-two".