142405780 has 48 divisors (see below), whose sum is σ = 328043520. Its totient is φ = 51497600.

The previous prime is 142405771. The next prime is 142405789. The reversal of 142405780 is 87504241.

It is an interprime number because it is at equal distance from previous prime (142405771) and next prime (142405789).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142405789) by changing a digit.

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, 40326 + ... + 43714.

It is an arithmetic number, because the mean of its divisors is an integer number (6834240).

Almost surely, 2^142405780 is an apocalyptic number.

142405780 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 142405780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164021760).

142405780 is an abundant number, since it is smaller than the sum of its proper divisors (185637740).

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

142405780 is a wasteful number, since it uses less digits than its factorization.

142405780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 142405780 is about 11933.3892922338. The cubic root of 142405780 is about 522.2068194910.

The spelling of 142405780 in words is "one hundred forty-two million, four hundred five thousand, seven hundred eighty".