201545742 has 16 divisors (see below), whose sum is σ = 403246800. Its totient is φ = 67156032.

The previous prime is 201545741. The next prime is 201545753. The reversal of 201545742 is 247545102.

It is a super-2 number, since 2×201545742² = 81241372236661128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201545741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16884 + ... + 26232.

It is an arithmetic number, because the mean of its divisors is an integer number (25202925).

Almost surely, 2^201545742 is an apocalyptic number.

201545742 is an abundant number, since it is smaller than the sum of its proper divisors (201701058).

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

201545742 is a wasteful number, since it uses less digits than its factorization.

201545742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 201545742 is about 14196.6806683816. The cubic root of 201545742 is about 586.3062752264.

The spelling of 201545742 in words is "two hundred one million, five hundred forty-five thousand, seven hundred forty-two".