142243542 has 24 divisors (see below), whose sum is σ = 352222416. Its totient is φ = 40640976.

The previous prime is 142243537. The next prime is 142243547. The reversal of 142243542 is 245342241.

It is an interprime number because it is at equal distance from previous prime (142243537) and next prime (142243547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142243547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564333 + ... + 564584.

It is an arithmetic number, because the mean of its divisors is an integer number (14675934).

Almost surely, 2^142243542 is an apocalyptic number.

142243542 is an abundant number, since it is smaller than the sum of its proper divisors (209978874).

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

142243542 is a wasteful number, since it uses less digits than its factorization.

142243542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128932 (or 1128929 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 142243542 is about 11926.5897053600. The cubic root of 142243542 is about 522.0084333865.

Adding to 142243542 its reverse (245342241), we get a palindrome (387585783).

It can be divided in two parts, 14224 and 3542, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 142243542 in words is "one hundred forty-two million, two hundred forty-three thousand, five hundred forty-two".