1542265145 has 4 divisors (see below), whose sum is σ = 1850718180. Its totient is φ = 1233812112.

The previous prime is 1542265141. The next prime is 1542265147. The reversal of 1542265145 is 5415622451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5415622451 = 46867 ⋅115553.

It can be written as a sum of positive squares in 2 ways, for example, as 288184576 + 1254080569 = 16976^2 + 35413^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542265145 - 2² = 1542265141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1542265141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154226510 + ... + 154226519.

It is an arithmetic number, because the mean of its divisors is an integer number (462679545).

Almost surely, 2^1542265145 is an apocalyptic number.

It is an amenable number.

1542265145 is a deficient number, since it is larger than the sum of its proper divisors (308453035).

1542265145 is an equidigital number, since it uses as much as digits as its factorization.

1542265145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308453034.

The product of its digits is 48000, while the sum is 35.

The square root of 1542265145 is about 39271.6837556018. The cubic root of 1542265145 is about 1155.3662612846.

Adding to 1542265145 its reverse (5415622451), we get a palindrome (6957887596).

The spelling of 1542265145 in words is "one billion, five hundred forty-two million, two hundred sixty-five thousand, one hundred forty-five".