142540104 has 128 divisors (see below), whose sum is σ = 446342400. Its totient is φ = 36986880.

The previous prime is 142540091. The next prime is 142540117. The reversal of 142540104 is 401045241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142540091) and next prime (142540117).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81964 + ... + 83684.

It is an arithmetic number, because the mean of its divisors is an integer number (3487050).

Almost surely, 2^142540104 is an apocalyptic number.

142540104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142540104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223171200).

142540104 is an abundant number, since it is smaller than the sum of its proper divisors (303802296).

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

142540104 is a wasteful number, since it uses less digits than its factorization.

142540104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142540104 is about 11939.0160398586. The cubic root of 142540104 is about 522.3709581135.

Adding to 142540104 its reverse (401045241), we get a palindrome (543585345).

The spelling of 142540104 in words is "one hundred forty-two million, five hundred forty thousand, one hundred four".