142000400 has 60 divisors (see below), whose sum is σ = 343561344. Its totient is φ = 56400000.

The previous prime is 142000393. The next prime is 142000451. The reversal of 142000400 is 4000241.

It is a super-2 number, since 2×142000400² = 40328227200320000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59225 + ... + 61575.

Almost surely, 2^142000400 is an apocalyptic number.

142000400 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 142000400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171780672).

142000400 is an abundant number, since it is smaller than the sum of its proper divisors (201560944).

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

142000400 is a wasteful number, since it uses less digits than its factorization.

142000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 142000400 is about 11916.3920714283. The cubic root of 142000400 is about 521.7108344960.

Adding to 142000400 its reverse (4000241), we get a palindrome (146000641).

The spelling of 142000400 in words is "one hundred forty-two million, four hundred", and thus it is an aban number.