1400042142 has 24 divisors (see below), whose sum is σ = 3061778616. Its totient is φ = 462318576.

The previous prime is 1400042099. The next prime is 1400042153. The reversal of 1400042142 is 2412400041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361533 + ... + 365384.

It is an arithmetic number, because the mean of its divisors is an integer number (127574109).

Almost surely, 2^1400042142 is an apocalyptic number.

1400042142 is an abundant number, since it is smaller than the sum of its proper divisors (1661736474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400042142 is a wasteful number, since it uses less digits than its factorization.

1400042142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727032 (or 727029 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1400042142 is about 37417.1370096644. The cubic root of 1400042142 is about 1118.7001666805.

Adding to 1400042142 its reverse (2412400041), we get a palindrome (3812442183).

The spelling of 1400042142 in words is "one billion, four hundred million, forty-two thousand, one hundred forty-two".