1400421234 has 16 divisors (see below), whose sum is σ = 2804551488. Its totient is φ = 466188912.

The previous prime is 1400421221. The next prime is 1400421241. The reversal of 1400421234 is 4321240041.

It is a super-2 number, since 2×1400421234² = 3922359265276165512, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400421234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149622 + ... + 158705.

It is an arithmetic number, because the mean of its divisors is an integer number (175284468).

Almost surely, 2^1400421234 is an apocalyptic number.

1400421234 is an abundant number, since it is smaller than the sum of its proper divisors (1404130254).

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

1400421234 is a wasteful number, since it uses less digits than its factorization.

1400421234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309089.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1400421234 is about 37422.2024204883. The cubic root of 1400421234 is about 1118.8011284062.

Adding to 1400421234 its reverse (4321240041), we get a palindrome (5721661275).

The spelling of 1400421234 in words is "one billion, four hundred million, four hundred twenty-one thousand, two hundred thirty-four".