142661400 has 96 divisors (see below), whose sum is σ = 505443840. Its totient is φ = 32607360.

The previous prime is 142661377. The next prime is 142661413. The reversal of 142661400 is 4166241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12784 + ... + 21183.

It is an arithmetic number, because the mean of its divisors is an integer number (5265040).

Almost surely, 2^142661400 is an apocalyptic number.

142661400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142661400 is an abundant number, since it is smaller than the sum of its proper divisors (362782440).

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

142661400 is a wasteful number, since it uses less digits than its factorization.

142661400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33993 (or 33984 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 142661400 is about 11944.0947752435. The cubic root of 142661400 is about 522.5190884566.

It can be divided in two parts, 1426 and 61400, that added together give a palindrome (62826).

The spelling of 142661400 in words is "one hundred forty-two million, six hundred sixty-one thousand, four hundred".