142521130 has 32 divisors (see below), whose sum is σ = 260542800. Its totient is φ = 56125440.

The previous prime is 142521121. The next prime is 142521139. The reversal of 142521130 is 31125241.

It is an interprime number because it is at equal distance from previous prime (142521121) and next prime (142521139).

It can be written as a sum of positive squares in 8 ways, for example, as 27237961 + 115283169 = 5219^2 + 10737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142521098 and 142521107.

It is not an unprimeable number, because it can be changed into a prime (142521139) 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, 338320 + ... + 338740.

Almost surely, 2^142521130 is an apocalyptic number.

142521130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142521130 is a deficient number, since it is larger than the sum of its proper divisors (118021670).

142521130 is a wasteful number, since it uses less digits than its factorization.

142521130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 142521130 is about 11938.2213918154. The cubic root of 142521130 is about 522.3477788910.

Adding to 142521130 its reverse (31125241), we get a palindrome (173646371).

It can be divided in two parts, 1425211 and 30, that added together give a palindrome (1425241).

The spelling of 142521130 in words is "one hundred forty-two million, five hundred twenty-one thousand, one hundred thirty".