1240151145 has 16 divisors (see below), whose sum is σ = 2070513792. Its totient is φ = 632656640.

The previous prime is 1240151141. The next prime is 1240151161. The reversal of 1240151145 is 5411510421.

It is not a de Polignac number, because 1240151145 - 2² = 1240151141 is a prime.

It is a super-2 number, since 2×1240151145² = 3075949724889622050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1240151141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796976 + ... + 1797665.

It is an arithmetic number, because the mean of its divisors is an integer number (129407112).

Almost surely, 2^1240151145 is an apocalyptic number.

1240151145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240151145 is a deficient number, since it is larger than the sum of its proper divisors (830362647).

1240151145 is a wasteful number, since it uses less digits than its factorization.

1240151145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594672.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1240151145 is about 35215.7797727098. The cubic root of 1240151145 is about 1074.3807199351.

Adding to 1240151145 its reverse (5411510421), we get a palindrome (6651661566).

It can be divided in two parts, 12401 and 51145, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 1240151145 in words is "one billion, two hundred forty million, one hundred fifty-one thousand, one hundred forty-five".