1142409345 has 32 divisors (see below), whose sum is σ = 2278886400. Its totient is φ = 474767040.

The previous prime is 1142409343. The next prime is 1142409347. The reversal of 1142409345 is 5439042411.

It is an interprime number because it is at equal distance from previous prime (1142409343) and next prime (1142409347).

It is not a de Polignac number, because 1142409345 - 2¹ = 1142409343 is a prime.

It is a super-2 number, since 2×1142409345² = 2610198223086658050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1142409343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493395 + ... + 495704.

It is an arithmetic number, because the mean of its divisors is an integer number (71215200).

Almost surely, 2^1142409345 is an apocalyptic number.

1142409345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142409345 is a deficient number, since it is larger than the sum of its proper divisors (1136477055).

1142409345 is a wasteful number, since it uses less digits than its factorization.

1142409345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989125.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1142409345 is about 33799.5465206266. The cubic root of 1142409345 is about 1045.3793468728.

The spelling of 1142409345 in words is "one billion, one hundred forty-two million, four hundred nine thousand, three hundred forty-five".