1240153145 has 64 divisors (see below), whose sum is σ = 1987545600. Its totient is φ = 719093760.

The previous prime is 1240153121. The next prime is 1240153147. The reversal of 1240153145 is 5413510421.

It is not a de Polignac number, because 1240153145 - 2⁶ = 1240153081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240153147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 581441 + ... + 583569.

It is an arithmetic number, because the mean of its divisors is an integer number (31055400).

Almost surely, 2^1240153145 is an apocalyptic number.

It is an amenable number.

1240153145 is a deficient number, since it is larger than the sum of its proper divisors (747392455).

1240153145 is a wasteful number, since it uses less digits than its factorization.

1240153145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1240153145 is about 35215.8081690595. The cubic root of 1240153145 is about 1074.3812974884.

Adding to 1240153145 its reverse (5413510421), we get a palindrome (6653663566).

The spelling of 1240153145 in words is "one billion, two hundred forty million, one hundred fifty-three thousand, one hundred forty-five".