1551145142 has 8 divisors (see below), whose sum is σ = 2449176600. Its totient is φ = 734752944.

The previous prime is 1551145121. The next prime is 1551145153. The reversal of 1551145142 is 2415411551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20409767 + ... + 20409842.

It is an arithmetic number, because the mean of its divisors is an integer number (306147075).

Almost surely, 2^1551145142 is an apocalyptic number.

1551145142 is a deficient number, since it is larger than the sum of its proper divisors (898031458).

1551145142 is a wasteful number, since it uses less digits than its factorization.

1551145142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40819630.

The product of its digits is 4000, while the sum is 29.

The square root of 1551145142 is about 39384.5800028387. The cubic root of 1551145142 is about 1157.5794606681.

Adding to 1551145142 its reverse (2415411551), we get a palindrome (3966556693).

The spelling of 1551145142 in words is "one billion, five hundred fifty-one million, one hundred forty-five thousand, one hundred forty-two".