1210142142 has 48 divisors (see below), whose sum is σ = 2930119920. Its totient is φ = 357763200.

The previous prime is 1210142137. The next prime is 1210142147. The reversal of 1210142142 is 2412410121.

It is an interprime number because it is at equal distance from previous prime (1210142137) and next prime (1210142147).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210142147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66417 + ... + 82652.

It is an arithmetic number, because the mean of its divisors is an integer number (61044165).

Almost surely, 2^1210142142 is an apocalyptic number.

1210142142 is an abundant number, since it is smaller than the sum of its proper divisors (1719977778).

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

1210142142 is a wasteful number, since it uses less digits than its factorization.

1210142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149129 (or 149126 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1210142142 is about 34787.0973494484. The cubic root of 1210142142 is about 1065.6439615331.

Adding to 1210142142 its reverse (2412410121), we get a palindrome (3622552263).

The spelling of 1210142142 in words is "one billion, two hundred ten million, one hundred forty-two thousand, one hundred forty-two".