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400213042 = 21699117779
BaseRepresentation
bin10111110110101…
…100010000110010
31000220001221002021
4113312230100302
51304423304132
6103413542054
712626516605
oct2766542062
91026057067
10400213042
11195a00a89
12b204492a
1364bb7568
143b21c33c
1525206997
hex17dac432

400213042 has 8 divisors (see below), whose sum is σ = 600678000. Its totient is φ = 199987044.

The previous prime is 400213019. The next prime is 400213049. The reversal of 400213042 is 240312004.

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 (400213049) 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, 55492 + ... + 62287.

It is an arithmetic number, because the mean of its divisors is an integer number (75084750).

Almost surely, 2400213042 is an apocalyptic number.

400213042 is a deficient number, since it is larger than the sum of its proper divisors (200464958).

400213042 is a wasteful number, since it uses less digits than its factorization.

400213042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119480.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400213042 is about 20005.3253410186. The cubic root of 400213042 is about 736.9370854182.

Adding to 400213042 its reverse (240312004), we get a palindrome (640525046).

The spelling of 400213042 in words is "four hundred million, two hundred thirteen thousand, forty-two".

Divisors: 1 2 1699 3398 117779 235558 200106521 400213042