140541057 has 24 divisors (see below), whose sum is σ = 217381320. Its totient is φ = 87183360.

The previous prime is 140541053. The next prime is 140541061. The reversal of 140541057 is 750145041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140541053) and next prime (140541061).

It can be written as a sum of positive squares in 4 ways, for example, as 21818241 + 118722816 = 4671^2 + 10896^2 .

It is not a de Polignac number, because 140541057 - 2² = 140541053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140541057.

It is not an unprimeable number, because it can be changed into a prime (140541053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8457 + ... + 18777.

It is an arithmetic number, because the mean of its divisors is an integer number (9057555).

Almost surely, 2^140541057 is an apocalyptic number.

140541057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

140541057 is a deficient number, since it is larger than the sum of its proper divisors (76840263).

140541057 is a wasteful number, since it uses less digits than its factorization.

140541057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433 (or 10430 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 140541057 is about 11855.0013496414. The cubic root of 140541057 is about 519.9174634781.

Adding to 140541057 its reverse (750145041), we get a palindrome (890686098).

The spelling of 140541057 in words is "one hundred forty million, five hundred forty-one thousand, fifty-seven".