1400020454 has 12 divisors (see below), whose sum is σ = 2442893004. Its totient is φ = 600008724.

The previous prime is 1400020451. The next prime is 1400020477. The reversal of 1400020454 is 4540200041.

It is a super-3 number, since 3×1400020454³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400020451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7142864 + ... + 7143059.

It is an arithmetic number, because the mean of its divisors is an integer number (203574417).

Almost surely, 2^1400020454 is an apocalyptic number.

1400020454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1400020454 is a deficient number, since it is larger than the sum of its proper divisors (1042872550).

1400020454 is a wasteful number, since it uses less digits than its factorization.

1400020454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14285939 (or 14285932 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1400020454 is about 37416.8471948132. The cubic root of 1400020454 is about 1118.6943900700.

Adding to 1400020454 its reverse (4540200041), we get a palindrome (5940220495).

The spelling of 1400020454 in words is "one billion, four hundred million, twenty thousand, four hundred fifty-four".