141566640 has 40 divisors (see below), whose sum is σ = 438857328. Its totient is φ = 37751040.

The previous prime is 141566629. The next prime is 141566647. The reversal of 141566640 is 46665141.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×141566640² = 40082227121779200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141566647) 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, 294691 + ... + 295170.

Almost surely, 2^141566640 is an apocalyptic number.

141566640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

141566640 is an abundant number, since it is smaller than the sum of its proper divisors (297290688).

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

141566640 is a wasteful number, since it uses less digits than its factorization.

141566640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589877 (or 589871 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 141566640 is about 11898.1780117798. The cubic root of 141566640 is about 521.1790798853.

The spelling of 141566640 in words is "one hundred forty-one million, five hundred sixty-six thousand, six hundred forty".