1254220142 has 16 divisors (see below), whose sum is σ = 2150576352. Its totient is φ = 537401760.

The previous prime is 1254220141. The next prime is 1254220147. The reversal of 1254220142 is 2410224521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254220141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85328 + ... + 98940.

It is an arithmetic number, because the mean of its divisors is an integer number (134411022).

Almost surely, 2^1254220142 is an apocalyptic number.

1254220142 is a deficient number, since it is larger than the sum of its proper divisors (896356210).

1254220142 is a wasteful number, since it uses less digits than its factorization.

1254220142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20203.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1254220142 is about 35414.9705915450. The cubic root of 1254220142 is about 1078.4282526922.

Adding to 1254220142 its reverse (2410224521), we get a palindrome (3664444663).

The spelling of 1254220142 in words is "one billion, two hundred fifty-four million, two hundred twenty thousand, one hundred forty-two".