400514142 has 24 divisors (see below), whose sum is σ = 931809096. Its totient is φ = 114432528.

The previous prime is 400514123. The next prime is 400514143. The reversal of 400514142 is 241415004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400514143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680853 + ... + 681440.

It is an arithmetic number, because the mean of its divisors is an integer number (38825379).

Almost surely, 2^400514142 is an apocalyptic number.

400514142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

400514142 is an abundant number, since it is smaller than the sum of its proper divisors (531294954).

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

400514142 is a wasteful number, since it uses less digits than its factorization.

400514142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362312 (or 1362305 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 400514142 is about 20012.8494223087. The cubic root of 400514142 is about 737.1218504556.

Adding to 400514142 its reverse (241415004), we get a palindrome (641929146).

The spelling of 400514142 in words is "four hundred million, five hundred fourteen thousand, one hundred forty-two".