142940000 has 120 divisors (see below), whose sum is σ = 402283728. Its totient is φ = 48960000.

The previous prime is 142939987. The next prime is 142940023. The reversal of 142940000 is 49241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139490 + ... + 140510.

Almost surely, 2^142940000 is an apocalyptic number.

142940000 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 142940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201141864).

142940000 is an abundant number, since it is smaller than the sum of its proper divisors (259343728).

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

142940000 is an equidigital number, since it uses as much as digits as its factorization.

142940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 142940000 is about 11955.7517538631. The cubic root of 142940000 is about 522.8590055801.

Adding to 142940000 its reverse (49241), we get a palindrome (142989241).

The spelling of 142940000 in words is "one hundred forty-two million, nine hundred forty thousand".