1143240554 has 8 divisors (see below), whose sum is σ = 1722415968. Its totient is φ = 569101900.

The previous prime is 1143240547. The next prime is 1143240557. The reversal of 1143240554 is 4550423411.

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

It is not an unprimeable number, because it can be changed into a prime (1143240557) 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, 1258622 + ... + 1259529.

It is an arithmetic number, because the mean of its divisors is an integer number (215301996).

Almost surely, 2^1143240554 is an apocalyptic number.

1143240554 is a deficient number, since it is larger than the sum of its proper divisors (579175414).

1143240554 is a wasteful number, since it uses less digits than its factorization.

1143240554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518380.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1143240554 is about 33811.8404408870. The cubic root of 1143240554 is about 1045.6328222925.

Adding to 1143240554 its reverse (4550423411), we get a palindrome (5693663965).

The spelling of 1143240554 in words is "one billion, one hundred forty-three million, two hundred forty thousand, five hundred fifty-four".