144142340 has 24 divisors (see below), whose sum is σ = 302968512. Its totient is φ = 57605600.

The previous prime is 144142331. The next prime is 144142381. The reversal of 144142340 is 43241441.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26537 + ... + 31503.

It is an arithmetic number, because the mean of its divisors is an integer number (12623688).

Almost surely, 2^144142340 is an apocalyptic number.

144142340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144142340 is an abundant number, since it is smaller than the sum of its proper divisors (158826172).

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

144142340 is a wasteful number, since it uses less digits than its factorization.

144142340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427 (or 6425 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144142340 is about 12005.9293684412. The cubic root of 144142340 is about 524.3209239739.

Adding to 144142340 its reverse (43241441), we get a palindrome (187383781).

The spelling of 144142340 in words is "one hundred forty-four million, one hundred forty-two thousand, three hundred forty".