201981424 has 10 divisors (see below), whose sum is σ = 391339040. Its totient is φ = 100990704.

The previous prime is 201981421. The next prime is 201981427. The reversal of 201981424 is 424189102.

It is an interprime number because it is at equal distance from previous prime (201981421) and next prime (201981427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201981421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311904 + ... + 6311935.

It is an arithmetic number, because the mean of its divisors is an integer number (39133904).

Almost surely, 2^201981424 is an apocalyptic number.

It is an amenable number.

201981424 is a deficient number, since it is larger than the sum of its proper divisors (189357616).

201981424 is a wasteful number, since it uses less digits than its factorization.

201981424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12623847 (or 12623841 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 201981424 is about 14212.0168871276. The cubic root of 201981424 is about 586.7284444815.

The spelling of 201981424 in words is "two hundred one million, nine hundred eighty-one thousand, four hundred twenty-four".