140557461 has 32 divisors (see below), whose sum is σ = 212872320. Its totient is φ = 81715200.

The previous prime is 140557381. The next prime is 140557463. The reversal of 140557461 is 164755041.

It is not a de Polignac number, because 140557461 - 2¹¹ = 140555413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140557463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184321 + ... + 185081.

It is an arithmetic number, because the mean of its divisors is an integer number (6652260).

Almost surely, 2^140557461 is an apocalyptic number.

140557461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140557461 is a deficient number, since it is larger than the sum of its proper divisors (72314859).

140557461 is a wasteful number, since it uses less digits than its factorization.

140557461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 140557461 is about 11855.6931893500. The cubic root of 140557461 is about 519.9376910055.

The spelling of 140557461 in words is "one hundred forty million, five hundred fifty-seven thousand, four hundred sixty-one".