201451842 has 24 divisors (see below), whose sum is σ = 443879280. Its totient is φ = 66012120.

The previous prime is 201451841. The next prime is 201451843. The reversal of 201451842 is 248154102.

201451842 is a `hidden beast` number, since 201 + 451 + 8 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (201451841) and next prime (201451843).

It is not an unprimeable number, because it can be changed into a prime (201451841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93784 + ... + 95907.

It is an arithmetic number, because the mean of its divisors is an integer number (18494970).

Almost surely, 2^201451842 is an apocalyptic number.

201451842 is an abundant number, since it is smaller than the sum of its proper divisors (242427438).

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

201451842 is a wasteful number, since it uses less digits than its factorization.

201451842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189758 (or 189755 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 201451842 is about 14193.3731720124. The cubic root of 201451842 is about 586.2152078740.

The spelling of 201451842 in words is "two hundred one million, four hundred fifty-one thousand, eight hundred forty-two".