141649640 has 64 divisors (see below), whose sum is σ = 362828160. Its totient is φ = 49265920.

The previous prime is 141649637. The next prime is 141649667. The reversal of 141649640 is 46946141.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 141649640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3122 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (5669190).

Almost surely, 2^141649640 is an apocalyptic number.

141649640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 141649640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181414080).

141649640 is an abundant number, since it is smaller than the sum of its proper divisors (221178520).

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

141649640 is a wasteful number, since it uses less digits than its factorization.

141649640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042 (or 14038 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 141649640 is about 11901.6654296783. The cubic root of 141649640 is about 521.2809151115.

The spelling of 141649640 in words is "one hundred forty-one million, six hundred forty-nine thousand, six hundred forty".