142621340 has 24 divisors (see below), whose sum is σ = 301305312. Its totient is φ = 56705600.

The previous prime is 142621309. The next prime is 142621361. The reversal of 142621340 is 43126241.

It is a congruent 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, 18011 + ... + 24690.

It is an arithmetic number, because the mean of its divisors is an integer number (12554388).

Almost surely, 2^142621340 is an apocalyptic number.

142621340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142621340 is an abundant number, since it is smaller than the sum of its proper divisors (158683972).

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

142621340 is a wasteful number, since it uses less digits than its factorization.

142621340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42877 (or 42875 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 142621340 is about 11942.4176781756. The cubic root of 142621340 is about 522.4701752624.

Adding to 142621340 its reverse (43126241), we get a palindrome (185747581).

The spelling of 142621340 in words is "one hundred forty-two million, six hundred twenty-one thousand, three hundred forty".