142401544 has 16 divisors (see below), whose sum is σ = 269107200. Its totient is φ = 70639632.

The previous prime is 142401491. The next prime is 142401547. The reversal of 142401544 is 445104241.

It is not an unprimeable number, because it can be changed into a prime (142401547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69064 + ... + 71095.

It is an arithmetic number, because the mean of its divisors is an integer number (16819200).

Almost surely, 2^142401544 is an apocalyptic number.

It is an amenable number.

142401544 is a deficient number, since it is larger than the sum of its proper divisors (126705656).

142401544 is a wasteful number, since it uses less digits than its factorization.

142401544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140292 (or 140288 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 142401544 is about 11933.2118057127. The cubic root of 142401544 is about 522.2016415879.

Adding to 142401544 its reverse (445104241), we get a palindrome (587505785).

The spelling of 142401544 in words is "one hundred forty-two million, four hundred one thousand, five hundred forty-four".