142319551 has 16 divisors (see below), whose sum is σ = 159793920. Its totient is φ = 125637120.

The previous prime is 142319549. The next prime is 142319581. The reversal of 142319551 is 155913241.

It is a cyclic number.

It is not a de Polignac number, because 142319551 - 2¹ = 142319549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142319531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90510 + ... + 92068.

It is an arithmetic number, because the mean of its divisors is an integer number (9987120).

Almost surely, 2^142319551 is an apocalyptic number.

142319551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142319551 is a deficient number, since it is larger than the sum of its proper divisors (17474369).

142319551 is a wasteful number, since it uses less digits than its factorization.

142319551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its digits is 5400, while the sum is 31.

The square root of 142319551 is about 11929.7758151610. The cubic root of 142319551 is about 522.1013966551.

The spelling of 142319551 in words is "one hundred forty-two million, three hundred nineteen thousand, five hundred fifty-one".