1402154243 has 8 divisors (see below), whose sum is σ = 1636557312. Its totient is φ = 1176275016.

The previous prime is 1402154231. The next prime is 1402154261. The reversal of 1402154243 is 3424512041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1402154243 - 2⁴ = 1402154227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402144243) 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, 2130605 + ... + 2131262.

It is an arithmetic number, because the mean of its divisors is an integer number (204569664).

Almost surely, 2^1402154243 is an apocalyptic number.

1402154243 is a deficient number, since it is larger than the sum of its proper divisors (234403069).

1402154243 is an equidigital number, since it uses as much as digits as its factorization.

1402154243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261921.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1402154243 is about 37445.3500851574. The cubic root of 1402154243 is about 1119.2624403648.

Adding to 1402154243 its reverse (3424512041), we get a palindrome (4826666284).

The spelling of 1402154243 in words is "one billion, four hundred two million, one hundred fifty-four thousand, two hundred forty-three".