1142400434 has 16 divisors (see below), whose sum is σ = 1973353536. Its totient is φ = 485862000.

The previous prime is 1142400431. The next prime is 1142400449. The reversal of 1142400434 is 4340042411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1142400431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309617 + ... + 313284.

It is an arithmetic number, because the mean of its divisors is an integer number (123334596).

Almost surely, 2^1142400434 is an apocalyptic number.

1142400434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1142400434 is a deficient number, since it is larger than the sum of its proper divisors (830953102).

1142400434 is a wasteful number, since it uses less digits than its factorization.

1142400434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623041.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1142400434 is about 33799.4146990743. The cubic root of 1142400434 is about 1045.3766288162.

Adding to 1142400434 its reverse (4340042411), we get a palindrome (5482442845).

The spelling of 1142400434 in words is "one billion, one hundred forty-two million, four hundred thousand, four hundred thirty-four".