11780142 has 16 divisors (see below), whose sum is σ = 25702272. Its totient is φ = 3569720.

The previous prime is 11780123. The next prime is 11780147. The reversal of 11780142 is 24108711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89178 + ... + 89309.

It is an arithmetic number, because the mean of its divisors is an integer number (1606392).

Almost surely, 2^11780142 is an apocalyptic number.

11780142 is an abundant number, since it is smaller than the sum of its proper divisors (13922130).

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

11780142 is a wasteful number, since it uses less digits than its factorization.

11780142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178503.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 11780142 is about 3432.2211467212. The cubic root of 11780142 is about 227.5360293941.

Adding to 11780142 its reverse (24108711), we get a palindrome (35888853).

The spelling of 11780142 in words is "eleven million, seven hundred eighty thousand, one hundred forty-two".